diff --git a/src/lab/QuestCubeLab.tsx b/src/lab/QuestCubeLab.tsx
index d5201d5..0f0a80e 100644
--- a/src/lab/QuestCubeLab.tsx
+++ b/src/lab/QuestCubeLab.tsx
@@ -38,7 +38,7 @@ const TRIGGER_DEADZONE = 0.05;
 const MOVE_SPEED = 1.5;
 const ROT_SPEED = 1.2;
 const SCALE_SPEED = 0.6;
-const CUBE_SIZE = 1;
+const CUBE_SIZE = 0.3;
 
 type AlignPhase = 'IDLE' | 'WAIT_SURFACE' | 'WAIT_FACE2' | 'WAIT_EDGE';
 
@@ -99,19 +99,11 @@ const CubeControlado = ({
       gpDesktop = gamepads[0] || null;
     }
 
-    if ((gpRight || gpDesktop) && !lockedRef.current && alignPhase === 'IDLE') {
-      let lx = 0, ly = 0, rx = 0, ry = 0;
-      let lt = 0, rt = 0;
-      let resetBtn = false;
+    let resetBtn = false;
+    let lx = 0, ly = 0, rx = 0, ry = 0;
 
+    if (gpRight || gpDesktop) {
       if (isWebXR) {
-        // WebXR: Analógicos são os índices 2 e 3. Grips são o botão 1. Botão A/B são 4 e 5.
-        lx = gpLeft?.axes[2] ?? 0;
-        ly = gpLeft?.axes[3] ?? 0;
-        rx = gpRight?.axes[2] ?? 0;
-        ry = gpRight?.axes[3] ?? 0;
-        lt = gpLeft?.buttons[1]?.value ?? 0;
-        rt = gpRight?.buttons[1]?.value ?? 0;
         resetBtn = 
           gpRight?.buttons[4]?.pressed || 
           gpRight?.buttons[5]?.pressed || 
@@ -119,14 +111,32 @@ const CubeControlado = ({
           gpLeft?.buttons[5]?.pressed || 
           false;
       } else {
-        // Desktop nativo
+        resetBtn = gpDesktop!.buttons[0]?.pressed || false;
+      }
+
+      // Reset total (funciona a qualquer momento, cancela até os passos do alinhamento)
+      if (resetBtn && !gamepadRef.current.a) {
+        posRef.current = { x: 0, y: 0.5, z: 0 };
+        rotRef.current = { x: 0, y: 0, z: 0 };
+        scaleRef.current = 1;
+        if (alignPhase !== 'IDLE') {
+          setAlignPhase('IDLE');
+        }
+      }
+      gamepadRef.current.a = resetBtn;
+    }
+
+    if ((gpRight || gpDesktop) && !lockedRef.current && alignPhase === 'IDLE') {
+      if (isWebXR) {
+        lx = gpLeft?.axes[2] ?? 0;
+        ly = gpLeft?.axes[3] ?? 0;
+        rx = gpRight?.axes[2] ?? 0;
+        ry = gpRight?.axes[3] ?? 0;
+      } else {
         lx = gpDesktop!.axes[0] ?? 0;
         ly = gpDesktop!.axes[1] ?? 0;
         rx = gpDesktop!.axes[2] ?? 0;
         ry = gpDesktop!.axes[3] ?? 0;
-        lt = gpDesktop!.buttons[6]?.value ?? 0;
-        rt = gpDesktop!.buttons[7]?.value ?? 0;
-        resetBtn = gpDesktop!.buttons[0]?.pressed || false;
       }
 
       const ax = Math.abs(lx) > STICK_DEADZONE ? lx : 0;
@@ -136,24 +146,11 @@ const CubeControlado = ({
 
       posRef.current.x -= ax * MOVE_SPEED * delta;
       posRef.current.z -= ay * MOVE_SPEED * delta;
-      posRef.current.y = Math.max(0.5, posRef.current.y);
+      posRef.current.y = Math.max(0.15, posRef.current.y);
 
       rotRef.current.x = (rotRef.current.x + ary * ROT_SPEED * delta) % (Math.PI * 2);
       rotRef.current.y = (rotRef.current.y - arx * ROT_SPEED * delta) % (Math.PI * 2);
-
-      const scaleDelta = rt - lt;
-      if (Math.abs(scaleDelta) > TRIGGER_DEADZONE) {
-        scaleRef.current = Math.max(0.2, Math.min(3, scaleRef.current + scaleDelta * SCALE_SPEED * delta));
-      }
-
-      if (resetBtn && !gamepadRef.current.a) {
-        posRef.current = { x: 0, y: 0.5, z: 0 };
-        rotRef.current = { x: 0, y: 0, z: 0 };
-        scaleRef.current = 1;
-      }
-      gamepadRef.current.a = resetBtn;
     } else if ((gpRight || gpDesktop) && lockedRef.current) {
-      let rx = 0, ry = 0;
       if (isWebXR) {
         rx = gpRight?.axes[2] ?? 0;
         ry = gpRight?.axes[3] ?? 0;
@@ -174,7 +171,7 @@ const CubeControlado = ({
 
   return (
     <XRGrabbable
-      allowScale={true}
+      allowScale={false}
       lockedActive={lockedRef.current}
       onSync={(deltaPos, deltaQuat, deltaScale) => {
         // Matriz atual do cubo