diff --git a/src/AcDream.Core/Physics/TransitionTypes.cs b/src/AcDream.Core/Physics/TransitionTypes.cs
index bfd62fa..1774313 100644
--- a/src/AcDream.Core/Physics/TransitionTypes.cs
+++ b/src/AcDream.Core/Physics/TransitionTypes.cs
@@ -774,11 +774,14 @@ public sealed class Transition
             return TransitionState.Adjusted;
         }
 
-        // Rewind the sphere to the contact point (before penetration).
+        // Rewind the sphere to just BEFORE the contact point.
+        // Use t slightly before bestT to ensure no penetration.
         if (bestT < 1f)
         {
-            Vector3 contactPos = currPos + movement * bestT;
-            contactPos += bestNormal * 0.005f;
+            float safeT = MathF.Max(0f, bestT - 0.02f);
+            Vector3 contactPos = currPos + movement * safeT;
+            // Additional push along normal to clear the surface.
+            contactPos += bestNormal * 0.02f;
             sp.SetCheckPos(contactPos, sp.CheckCellId);
         }