diff --git a/language.version b/language.version
index c46566711..b2a01547f 100644
--- a/language.version
+++ b/language.version
@@ -1,3 +1,3 @@
 [default]
-SWWM_MODVER="\cyDEMOLITIONIST \cw1.3pre r1090 \cu(Wed 17 Jan 12:39:00 CET 2024)\c-";
-SWWM_SHORTVER="\cw1.3pre r1090 \cu(2024-01-17 12:39:00)\c-";
+SWWM_MODVER="\cyDEMOLITIONIST \cw1.3pre r1091 \cu(Wed 17 Jan 14:07:32 CET 2024)\c-";
+SWWM_SHORTVER="\cw1.3pre r1091 \cu(2024-01-17 14:07:32)\c-";
diff --git a/zscript/player/swwm_player_move.zsc b/zscript/player/swwm_player_move.zsc
index c1d57bb9c..14cff8100 100644
--- a/zscript/player/swwm_player_move.zsc
+++ b/zscript/player/swwm_player_move.zsc
@@ -669,7 +669,7 @@ extend Class Demolitionist
 	{
 		double defaultheight = FullHeight;
 		double savedheight = Height;
-		double crouchspeed = direction*CROUCHSPEED*.8;	// slow down slightly so it matches the animation
+		double crouchspeed = direction*CROUCHSPEED*((direction>0)?.65:.9);	// match animation speed
 		double oldheight = player.viewheight;
 		player.crouchdir = direction;
 		player.crouchfactor += crouchspeed;
diff --git a/zscript/player/swwm_player_tick.zsc b/zscript/player/swwm_player_tick.zsc
index d191ae96f..79aa7ffec 100644
--- a/zscript/player/swwm_player_tick.zsc
+++ b/zscript/player/swwm_player_tick.zsc
@@ -193,7 +193,18 @@ extend Class Demolitionist
 		PoisonDurationReceived = 0;
 		PoisonPeriodReceived = 0;
 		PoisonDamageReceived = 0;
+		double PrevHeight = Height;
 		Super.Tick();
+		double HeightDiff = Height-PrevHeight;
+		// shift vertically around center of gravity if crouching while airborne (crouch jumping)
+		if ( player && (player.mo == self) && CanCrouch() && (player.playerstate != PST_DEAD) && !player.onground && (abs(HeightDiff) > 0) )
+		{
+			double oldz = pos.z;
+			SetZ(pos.z-HeightDiff*.5);
+			// note: even with this check, clipping through sloped 3D floors may still happen
+			//       (honestly, sloped 3d floors are a source of many troubles)
+			if ( !TryMove(pos.xy,false) ) SetZ(oldz);
+		}
 		if ( (gamestate != GS_LEVEL) || !player || (player.mo != self) || (freezetics > 0) ) return;
 		UpdateFace();
 		UpdateTags();