diff --git a/game/reconstructed/mech4.cpp b/game/reconstructed/mech4.cpp
index 06b0b80..d8b8ef2 100644
--- a/game/reconstructed/mech4.cpp
+++ b/game/reconstructed/mech4.cpp
@@ -2134,7 +2134,23 @@ void
 				// once so a direct run-state entry can't slew from -4.3e8.
 				if (legCycleSpeed < -100.0f || legCycleSpeed > 200.0f)
 					legCycleSpeed = 0.0f;
-				const Scalar replLegAdv = AdvanceLegAnimation(dt);	// joints + ROOT TRAVEL
+				// PEER POSE CHANNEL (decomp workflow w1s9ou02o -- the authentic fix): the
+				// 1995 peer posed the WHOLE skeleton from the BODY channel (FUN_004a5678)
+				// FOLLOWING the master's replicated body-anim state (bodyStateAlarm@0x728,
+				// set by the type-3 reader's SetBodyAnimation, mech.cpp:1913) + replicated
+				// bodyTargetSpeed@0x6b4.  The LEG channel (FUN_004a5028) is DEAD CODE.  Our
+				// port resurrected the leg SM as the peer's poser fed a LOCALLY re-derived
+				// commanded speed, and the leg SM's phase-independent pre-switch wind-down
+				// (mech2.cpp:560-568, force-jump {6,7,8,9}->stand when legCycleSpeed<=0) makes
+				// the peer SKIP the master's decel state 8 and snap to stand while the body
+				// coasts (the 'slid forward after legs stopped' bug).  The body channel has
+				// NO such wind-down and follows the replicated decel state, playing the
+				// master's exact clips.  Swapping the peer to the body channel RESTORES the
+				// original single-channel design (no new netcode).  BT_PEER_LEGCH=1 = old.
+				static const int s_peerLegCh = getenv("BT_PEER_LEGCH") ? 1 : 0;
+				const Scalar replLegAdv = s_peerLegCh
+					? AdvanceLegAnimation(dt)			// old: re-derived leg SM
+					: AdvanceBodyAnimation(dt, 1);		// authentic: body channel, mj=1 poses skeleton
 				// AUTHENTIC coupled position (mirror of the master's world-step at
 				// mech4.cpp:3325-3336 == Mech::IntegrateMotion tail @004ab1c8): between
 				// records the body advances by the CLIP'S OWN travel rotated by the
@@ -2195,7 +2211,7 @@ void
 				if (getenv("BT_SLIDE"))
 				{
 					static Point3D s_slPrev; static int s_slInit = 0;
-					const int ls = (int)legStateAlarm.GetLevel();
+					const int ls = getenv("BT_PEER_LEGCH") ? (int)legStateAlarm.GetLevel() : (int)bodyStateAlarm.GetLevel();
 					if (s_slInit)
 					{
 						const float dx = (float)(localOrigin.linearPosition.x - s_slPrev.x);
@@ -2240,8 +2256,9 @@ void
 					static float s_gvPrevF = -1.0f, s_gvAcc = 0.0f, s_gvSum = 0.0f, s_gvMax = 0.0f;
 					static int   s_gvN = 0, s_gvBack = 0, s_gvTrans = 0, s_gvPrevSt = -1;
 					static float s_gvDemPrev = 0.0f; static int s_gvDemChg = 0;
-					const float gf = (float)legAnimation.currentFrame;
-					const int   gs = (int)legStateAlarm.GetLevel();
+					const int _pb = getenv("BT_PEER_LEGCH") ? 1 : 0;
+					const float gf = _pb ? (float)legAnimation.currentFrame : (float)bodyAnimation.currentFrame;
+					const int   gs = _pb ? (int)legStateAlarm.GetLevel() : (int)bodyStateAlarm.GetLevel();
 					if (s_gvPrevF >= 0.0f)
 					{
 						float df = gf - s_gvPrevF;