diff --git a/DeepDrftPublic.Client/Controls/MixWaveformVisualizer.razor.cs b/DeepDrftPublic.Client/Controls/MixWaveformVisualizer.razor.cs
index 78b2db6..a3c542a 100644
--- a/DeepDrftPublic.Client/Controls/MixWaveformVisualizer.razor.cs
+++ b/DeepDrftPublic.Client/Controls/MixWaveformVisualizer.razor.cs
@@ -59,7 +59,7 @@ public partial class MixWaveformVisualizer : ComponentBase, IAsyncDisposable
     // `[MixVisualizer]`, same as the JS logs so the two interleave into one timeline). These pinpoint
     // which upstream link is broken when the ribbon stays blank — set false once confirmed healthy.
     // ON for the Phase 10 reframe Wave R4 controls test (matches the JS-side DEBUG in
-    // MixVisualizer.ts). Daniel evaluates the seven-knob bar + pause behavior in-browser; flip back to
+    // MixVisualizer.ts). Daniel evaluates the eight-knob bar + pause behavior in-browser; flip back to
     // false at reframe close along with the JS flag.
     private static readonly bool Debug = true;
     private const string Tag = "[MixVisualizer]";
diff --git a/DeepDrftPublic.Client/Services/MixVisualizerControlState.cs b/DeepDrftPublic.Client/Services/MixVisualizerControlState.cs
index c9891c3..7477b12 100644
--- a/DeepDrftPublic.Client/Services/MixVisualizerControlState.cs
+++ b/DeepDrftPublic.Client/Services/MixVisualizerControlState.cs
@@ -30,9 +30,10 @@ public sealed class MixVisualizerControlState
     // sweet spot (§4c).
 
     /// <summary>
-    /// Default scroll-speed dial. Mirrors <c>DEFAULT_SCROLL_SPEED</c> in MixVisualizer.ts. Normalized
-    /// [0,1] → mapped to the visible time-span via <see cref="MixZoomMapping"/> (0 = slow/wide window,
-    /// 1 = fast/tight window). Opens mid-range.
+    /// Default scroll-speed dial. Normalized [0,1] → mapped C#-side to a visible time-span in seconds
+    /// via <see cref="MixZoomMapping"/>, then sent to MixVisualizer.ts as a seconds value via
+    /// <c>setScrollSpeed</c>. The TS-side anchor is <c>DEFAULT_VISIBLE_SECONDS</c>. Opens mid-range
+    /// (0 = slow/wide window, 1 = fast/tight window).
     /// </summary>
     public const double DefaultScrollSpeed = 0.5;
 
diff --git a/DeepDrftPublic/Interop/visualizer/MixVisualizer.ts b/DeepDrftPublic/Interop/visualizer/MixVisualizer.ts
index 12b9851..49bdb1a 100644
--- a/DeepDrftPublic/Interop/visualizer/MixVisualizer.ts
+++ b/DeepDrftPublic/Interop/visualizer/MixVisualizer.ts
@@ -1426,9 +1426,9 @@ export function create(canvas: HTMLCanvasElement): MixVisualizerHandle {
      *  toe) keeps the low end gentle so small dial moves near 0 don't suddenly erupt. */
     function heatScaleFromDial(dial: number): number {
         const d = Math.min(Math.max(dial, 0), 1);
-        // Smoothstep toe (gentle at 0) scaled to reach 1.2 at dial 1 — Phase 10 §3.4: ~20% stronger
-        // at the high end so full heat roils harder. The low/mid feel is unchanged (the toe dominates
-        // there); only the top end gains the extra 20% drive into the floor-heating + buoyancy + turbulence.
+        // Smoothstep toe (gentle at 0) scaled by 1.2 — Phase 10 §3.4: uniform +20% across the curve
+        // (every non-zero dial position is raised by 20%; the shape of the toe is preserved but the
+        // overall output is higher at every point).
         return d * d * (3 - 2 * d) * 1.2;
     }
 
@@ -1601,7 +1601,8 @@ export function create(canvas: HTMLCanvasElement): MixVisualizerHandle {
                 b.vx += sideSign * WAVE_COLLIDE_SPRING * penetration * dt * (1 - collideHardness);
 
                 // Hard elastic reflection (hard end): bounce the inward velocity back out, scaled
-                // by restitution × hardness (over-unity restitution at the top = the springy throw).
+                // by restitution × hardness. Restitution is sub-unity (≤ 0.85) — bounded reflection,
+                // no energy added.
                 if (inwardSpeed > 0) {
                     b.vx += sideSign * inwardSpeed * (1 + waveRest) * collideHardness;
                 }
@@ -1613,9 +1614,9 @@ export function create(canvas: HTMLCanvasElement): MixVisualizerHandle {
                 const throwUp = Math.min(WAVE_THROW_UP * penetration * dt * collideHardness, WAVE_THROW_UP_MAX);
                 b.vy -= throwUp;
 
-                // Positional push-out: always eject the wax fully out of the ribbon along the normal so
-                // it can never lodge inside (Daniel "gets stuck"). The soft end eases it out gently
-                // (mushy), the hard end snaps it clean — but both clear the boundary, so no stuck wax.
+                // Positional push-out: ejects the wax progressively out of the ribbon along the normal
+                // (converges across substeps, so no stuck wax). The soft end eases it out gently
+                // (mushy), the hard end snaps it clean.
                 b.x += sideSign * penetration * (0.5 + 0.5 * collideHardness);
             }