diff --git a/gui/lander/lander.tal b/gui/lander/lander.tal
index bb6b3c7..0234c4b 100644
--- a/gui/lander/lander.tal
+++ b/gui/lander/lander.tal
@@ -38,14 +38,24 @@ BRK
 	#01 AND ?&no-read
 	.Controller/button DEI
 	DUP #10 NEQ ?&no-u
-		.force/y LDZ2 #0008 SUB2 .force/y STZ2
+
+		.angle LDZ2 
+		#10 SFT2 ;circle-tbl ADD2 LDA2 SWP
+		( y )
+		#0000 ROT #00 SWP SUB2 reduce2
+			.force/y LDZ2 ADD2
+			.force/y STZ2
+		( y )
+		#0000 ROT #00 SWP SUB2 reduce2
+			.force/x LDZ2 ADD2
+			.force/x STZ2
 		&no-u
 	DUP #40 NEQ ?&no-l
-		.angle LDZ2 #0001 SUB2 .angle STZ2
+		.angle LDZ2 #0001 SUB2 #001f AND2 .angle STZ2
 		;draw-lander/plume LDA INC ;draw-lander/plume STA
 		&no-l
 	DUP #80 NEQ ?&no-r
-		.angle LDZ2 INC2 .angle STZ2
+		.angle LDZ2 INC2 #001f AND2 .angle STZ2
 		;draw-lander/plume LDA INC ;draw-lander/plume STA
 		&no-r
 	POP
@@ -69,6 +79,8 @@ BRK
 	.force/y LDZ2 INC2 .force/y STZ2
 	.force/y LDZ2 reduce .pos/y LDZ2 ADD2 .pos/y STZ2
 
+	.force/x LDZ2 reduce .pos/x LDZ2 ADD2 .pos/x STZ2
+
 JMP2r
 
 @reduce ( force* -- )
@@ -78,6 +90,13 @@ JMP2r
 JMP2r
 &neg abs2 #02 SFT2 #0000 SWP2 SUB2 JMP2r
 
+@reduce2 ( force* -- )
+
+	DUP2 #8000 AND2 ORA ?&neg
+	#05 SFT2
+JMP2r
+&neg abs2 #05 SFT2 #0000 SWP2 SUB2 JMP2r
+
 (
 @|drawing )