diff --git a/3d_scene_final.jsx b/3d_scene_final.jsx
new file mode 100644
index 0000000..e69de29
diff --git a/public/models/3d_scene_final.glb b/public/models/3d_scene_final.glb
index c7eb88f..a7a7526 100644
Binary files a/public/models/3d_scene_final.glb and b/public/models/3d_scene_final.glb differ
diff --git a/src/modules/how-it-works-3d/Experience3D.jsx b/src/modules/how-it-works-3d/Experience3D.jsx
index 6486089..852b374 100644
--- a/src/modules/how-it-works-3d/Experience3D.jsx
+++ b/src/modules/how-it-works-3d/Experience3D.jsx
@@ -66,6 +66,17 @@ export default function Experience3D() {
     return () => io.disconnect()
   }, [])
 
+  // Refresh ScrollTrigger when the scene actually mounts. WebGL canvas mounting
+  // can block the main thread and shift elements, so a refresh here is critical.
+  useEffect(() => {
+    if (mountScene) {
+      const timer = setTimeout(() => {
+        ScrollTrigger.refresh()
+      }, 150)
+      return () => clearTimeout(timer)
+    }
+  }, [mountScene])
+
   // Own Lenis instance (global Lenis is gated off for this route).
   useEffect(() => {
     const lenis = new Lenis({
@@ -77,18 +88,14 @@ export default function Experience3D() {
     setLenis(lenis)
     lenis.on('scroll', ScrollTrigger.update)
 
-    let rafId
-    function raf(time) {
-      lenis.raf(time)
-      rafId = requestAnimationFrame(raf)
-    }
-    rafId = requestAnimationFrame(raf)
-
+    // Drive Lenis using GSAP's ticker to ensure synchronization with ScrollTrigger
+    const tickerCb = (time) => lenis.raf(time * 1000)
+    gsap.ticker.add(tickerCb)
     gsap.ticker.lagSmoothing(0)
     ScrollTrigger.refresh()
 
     return () => {
-      cancelAnimationFrame(rafId)
+      gsap.ticker.remove(tickerCb)
       lenis.destroy()
       setLenis(null)
     }
diff --git a/src/modules/how-it-works-3d/components/ScrollRig.jsx b/src/modules/how-it-works-3d/components/ScrollRig.jsx
index 25a39cc..9d798bf 100644
--- a/src/modules/how-it-works-3d/components/ScrollRig.jsx
+++ b/src/modules/how-it-works-3d/components/ScrollRig.jsx
@@ -3,7 +3,6 @@ import gsap from 'gsap'
 import { ScrollTrigger } from 'gsap/ScrollTrigger'
 import { useSceneStore } from '../store/useSceneStore'
 import { animateDashboard } from '../animations/dashboardAnimation'
-import { playRevealChime } from '../utils/audioHelper'
 
 gsap.registerPlugin(ScrollTrigger)
 
@@ -53,7 +52,6 @@ export default function ScrollRig({ dashboardRefs, onPinState }) {
         }
         
         if (section !== activeSectionRef.current) {
-          playRevealChime()
           activeSectionRef.current = section
         }
 
@@ -79,8 +77,13 @@ export default function ScrollRig({ dashboardRefs, onPinState }) {
         }
       },
     })
+    const refreshTimeout = setTimeout(() => {
+      ScrollTrigger.refresh()
+    }, 150)
+
     return () => {
       trigger.kill()
+      clearTimeout(refreshTimeout)
     }
   }, [setScrollProgress, setActiveSection, dashboardRefs, lenis, onPinState])
 
diff --git a/src/modules/how-it-works-3d/components/TruckAnimation.jsx b/src/modules/how-it-works-3d/components/TruckAnimation.jsx
index 76666c6..750c092 100644
--- a/src/modules/how-it-works-3d/components/TruckAnimation.jsx
+++ b/src/modules/how-it-works-3d/components/TruckAnimation.jsx
@@ -32,10 +32,8 @@ export default function TruckAnimation({ truckRef, wheelRefs }) {
   // Track wheel rotation accumulation
   const accumulatedRotationRef = useRef(0)
   const lastDampedProgressRef = useRef(0)
-
-
-
   useFrame((state, delta) => {
+
     if (!truckRef.current) return
 
     // r3f can emit delta === 0 (coincident frames, the first frame, or after a
@@ -78,10 +76,12 @@ export default function TruckAnimation({ truckRef, wheelRefs }) {
     // Run one-time state initialization for progress trackers
     if (!initialized.current) {
       dampedProgressRef.current = truckProgress
+      dampedProgressRef.current_velocity = 0
       lastDampedProgressRef.current = truckProgress
       lastScrollProgressRef.current = scrollProgress
       isReversingRef.current = false
       extraRotationRef.current = 0
+      extraRotationRef.current_velocity = 0
 
       const position = truckPath.getPoint(dampedProgressRef.current)
       let lookAtTargetVector
@@ -146,6 +146,13 @@ export default function TruckAnimation({ truckRef, wheelRefs }) {
     // Smoothly damp the extra rotation angle directly (prevents pitch/roll glitches or 3D target collapse)
     easing.damp(extraRotationRef, 'current', targetExtraRotation, 0.20, dt)
 
+    // Defensive: reset extra rotation if it becomes NaN
+    if (!Number.isFinite(extraRotationRef.current)) {
+      extraRotationRef.current = targetExtraRotation
+      extraRotationRef.current_velocity = 0
+      if (extraRotationRef.__damp) extraRotationRef.__damp = {}
+    }
+
     // Apply the yaw pivot around the local vertical axis
     truckRef.current.rotateY(extraRotationRef.current)
 
diff --git a/src/modules/how-it-works-3d/models/Scene3D.jsx b/src/modules/how-it-works-3d/models/Scene3D.jsx
index d119eb1..af6824e 100644
--- a/src/modules/how-it-works-3d/models/Scene3D.jsx
+++ b/src/modules/how-it-works-3d/models/Scene3D.jsx
@@ -5,7 +5,7 @@ Auto-generated by: https://github.com/pmndrs/gltfjsx
 import React, { useRef } from 'react'
 import { useGLTF } from '@react-three/drei'
 
-export function Model(props) {
+export function Model({ truckRef, wheelRefs, dashboardRefs, ...props }) {
   const { nodes, materials } = useGLTF('/models/3d_scene_final.glb')
   return (
     <group {...props} dispose={null}>
@@ -93,10 +93,16 @@ export function Model(props) {
       <mesh
         castShadow
         receiveShadow
-        geometry={nodes.DoorMile_Logo_FirstWarehouse.geometry}
-        material={materials.DoorMile_Logo_Image_Material}
-        position={[-8.676, 0.035, -5.18]}
-        rotation={[0, -0.121, 0]}
+        geometry={nodes.Uploaded_DoorMile_Logo_FirstWarehouse.geometry}
+        material={materials.DoorMile_Uploaded_Red_Logo_Material}
+      />
+      <mesh
+        castShadow
+        receiveShadow
+        geometry={nodes.Uploaded_DoorMile_Logo_FrontFascia.geometry}
+        material={materials.DoorMile_Uploaded_White_Logo_Material}
+        position={[-7.462, 2.155, -1.793]}
+        scale={0.597}
       />
       <mesh
         castShadow
@@ -164,6 +170,13 @@ export function Model(props) {
           </group>
         </group>
       </group>
+      <mesh
+        castShadow
+        receiveShadow
+        geometry={nodes.ABC_Factory_HubSign_TextPanel.geometry}
+        material={materials.ABC_Factory_TextPanel_Material}
+        position={[0, -0.141, 0]}
+      />
       <mesh
         castShadow
         receiveShadow
@@ -171,7 +184,7 @@ export function Model(props) {
         material={materials.Dark_Asphalt}
         position={[0.013, -0.077, -0.026]}
       />
-      <group ref={props.truckRef} position={[14.891, 0.284, -25.037]} rotation={[-Math.PI / 2, 0, -2.318]} scale={0.66}>
+      <group ref={truckRef} position={[14.891, 0.284, -25.037]} rotation={[-Math.PI / 2, 0, -2.318]} scale={0.66}>
         <group rotation={[Math.PI / 2, 0, 0]}>
           <group position={[0.013, 0.67, 0.006]} rotation={[0, -Math.PI / 2, 0]} scale={1.155}>
             <mesh
@@ -407,7 +420,7 @@ export function Model(props) {
             />
           </group>
           <group
-            ref={props.wheelRefs && props.wheelRefs[0]}
+            ref={wheelRefs?.[0]}
             position={[1.873, 0.356, -0.899]}
             rotation={[-Math.PI / 2, 0, -Math.PI]}
             scale={[1.059, 1.044, 1.059]}>
@@ -420,7 +433,7 @@ export function Model(props) {
             />
           </group>
           <group
-            ref={props.wheelRefs && props.wheelRefs[1]}
+            ref={wheelRefs?.[1]}
             position={[1.873, 0.356, 0.91]}
             rotation={[Math.PI / 2, 0, Math.PI]}
             scale={[1.059, 1.044, 1.059]}>
@@ -433,7 +446,7 @@ export function Model(props) {
             />
           </group>
           <group
-            ref={props.wheelRefs && props.wheelRefs[2]}
+            ref={wheelRefs?.[2]}
             position={[-1.472, 0.356, -0.876]}
             rotation={[-Math.PI / 2, 0, -Math.PI]}
             scale={[1.059, 0.662, 1.059]}>
@@ -446,7 +459,7 @@ export function Model(props) {
             />
           </group>
           <group
-            ref={props.wheelRefs && props.wheelRefs[3]}
+            ref={wheelRefs?.[3]}
             position={[-1.472, 0.356, 0.886]}
             rotation={[Math.PI / 2, 0, Math.PI]}
             scale={[1.059, 0.662, 1.059]}>
@@ -7526,20 +7539,12 @@ export function Model(props) {
         material={materials['DOORMILE bright red signage']}
         position={[-18.384, 4.82, -4.46]}
       />
-      <mesh
-        castShadow
-        receiveShadow
-        geometry={nodes.white_DOORMILE_brand_letters.geometry}
-        material={materials['crisp white lettering and lines']}
-        position={[-18.384, 5.08, -4.285]}
-        rotation={[Math.PI / 2, 0, 0]}
-      />
       <mesh
         castShadow
         receiveShadow
         geometry={nodes.white_in_transit_hub_operations_subtitle.geometry}
         material={materials['crisp white lettering and lines']}
-        position={[-18.384, 4.5, -4.282]}
+        position={[-18.384, 4.5, -4.33]}
         rotation={[Math.PI / 2, 0, 0]}
       />
       <mesh
@@ -10592,24 +10597,7 @@ export function Model(props) {
         rotation={[Math.PI, -1.081, Math.PI]}
         scale={0.608}
       />
-      <mesh
-        castShadow
-        receiveShadow
-        geometry={nodes.large_white_DOORMILE_letters.geometry}
-        material={materials['white raised sign lettering']}
-        position={[11.723, 4.419, 13.869]}
-        rotation={[Math.PI / 2, 0, 2.061]}
-        scale={0.608}
-      />
-      <mesh
-        castShadow
-        receiveShadow
-        geometry={nodes.white_delivery_to_customer_tagline.geometry}
-        material={materials['white raised sign lettering']}
-        position={[11.718, 4.078, 13.866]}
-        rotation={[Math.PI / 2, 0, 2.061]}
-        scale={0.608}
-      />
+
       <mesh
         castShadow
         receiveShadow
diff --git a/src/modules/how-it-works-3d/utils/audioHelper.js b/src/modules/how-it-works-3d/utils/audioHelper.js
deleted file mode 100644
index 25a2acf..0000000
--- a/src/modules/how-it-works-3d/utils/audioHelper.js
+++ /dev/null
@@ -1,89 +0,0 @@
-let audioContext = null;
-let isUnlocked = false;
-
-// Initialize and unlock audio context
-export const initAudio = () => {
-  if (isUnlocked) return;
-  
-  const AudioContextClass = window.AudioContext || window.webkitAudioContext;
-  if (!AudioContextClass) return;
-
-  if (!audioContext) {
-    audioContext = new AudioContextClass();
-  }
-
-  // Resume context if suspended (browser autoplay policy)
-  if (audioContext.state === 'suspended') {
-    audioContext.resume().then(() => {
-      isUnlocked = true;
-      cleanupListeners();
-    }).catch(() => {});
-  } else {
-    isUnlocked = true;
-    cleanupListeners();
-  }
-};
-
-const cleanupListeners = () => {
-  window.removeEventListener('click', initAudio);
-  window.removeEventListener('keydown', initAudio);
-  window.removeEventListener('touchstart', initAudio);
-  window.removeEventListener('wheel', initAudio);
-};
-
-// Add listeners for early activation
-if (typeof window !== 'undefined') {
-  window.addEventListener('click', initAudio, { passive: true });
-  window.addEventListener('keydown', initAudio, { passive: true });
-  window.addEventListener('touchstart', initAudio, { passive: true });
-  window.addEventListener('wheel', initAudio, { passive: true });
-}
-
-// Play a high-tech UI chime sound for card reveal
-export const playRevealChime = () => {
-  try {
-    const AudioContextClass = window.AudioContext || window.webkitAudioContext;
-    if (!AudioContextClass) return;
-
-    if (!audioContext) {
-      audioContext = new AudioContextClass();
-    }
-
-    if (audioContext.state === 'suspended') {
-      audioContext.resume().catch(() => {});
-    }
-
-    const now = audioContext.currentTime;
-
-    // Master Volume node with exponential decay
-    const masterGain = audioContext.createGain();
-    masterGain.gain.setValueAtTime(0, now);
-    masterGain.gain.linearRampToValueAtTime(0.15, now + 0.04); // subtle fade-in to avoid clicking
-    masterGain.gain.exponentialRampToValueAtTime(0.0001, now + 0.4); // smooth tail decay
-
-    // Warm base oscillator (triangle wave)
-    const baseOsc = audioContext.createOscillator();
-    baseOsc.type = 'triangle';
-    baseOsc.frequency.setValueAtTime(329.63, now); // E4 pitch
-    baseOsc.frequency.exponentialRampToValueAtTime(523.25, now + 0.25); // Slide up to C5
-
-    // High harmonic chime oscillator (sine wave)
-    const chimeOsc = audioContext.createOscillator();
-    chimeOsc.type = 'sine';
-    chimeOsc.frequency.setValueAtTime(659.25, now); // E5 pitch
-    chimeOsc.frequency.exponentialRampToValueAtTime(1046.50, now + 0.25); // Slide up to C6
-
-    // Connect nodes
-    baseOsc.connect(masterGain);
-    chimeOsc.connect(masterGain);
-    masterGain.connect(audioContext.destination);
-
-    // Play oscillators
-    baseOsc.start(now);
-    baseOsc.stop(now + 0.4);
-    chimeOsc.start(now);
-    chimeOsc.stop(now + 0.4);
-  } catch (error) {
-    console.warn('Playback of reveal chime failed:', error);
-  }
-};