diff --git a/m1/case/Makefile b/m1/case/Makefile
index c00d425..2016871 100644
--- a/m1/case/Makefile
+++ b/m1/case/Makefile
@@ -2,7 +2,7 @@ SPOOL=/home/moko/svn.openmoko.org/developers/werner/cncmap/spool/spool
 CNGT=/home/qi/cae-tools/cngt/cngt
 
 Z0=-55.0
-BOARD=X0=5.0mm Y0=0.0mm Z0=$(Z0)mm BOARD_Z=4.5mm
+BOARD=X0=5.0mm Y0=0.0mm Z0=$(Z0)mm BOARD_Z=3.5mm
 TASK=Y=1
 
 .PHONY:		all front rear cng clean
@@ -25,8 +25,8 @@ front:		front.rml
 rear:		rear.rml
 		PORT=/dev/ttyUSB0 $(SPOOL) $<
 
-cng:		front.gp
-		$(CNGT) $(Z0) 20 front.gp
+cng:		front.rml
+		$(CNGT) $(Z0) 20 _front.gp
 
 clean:
 		rm -f front.gp _front.gp front.rml
diff --git a/m1/case/doit b/m1/case/doit
index aa0b22d..66b6857 100755
--- a/m1/case/doit
+++ b/m1/case/doit
@@ -58,4 +58,4 @@ EOF
     yi=`expr $yi + 1`
 done
 
-gp2rml $CLEARANCE 10 10 _$NAME.gp >$NAME.rml || exit
+gp2rml $CLEARANCE 5 5 _$NAME.gp >$NAME.rml || exit