diff --git a/site_ansto/instrument/reflectometer/motor_configuration.tcl b/site_ansto/instrument/reflectometer/motor_configuration.tcl
index 3eaa3107..42fd15c6 100644
--- a/site_ansto/instrument/reflectometer/motor_configuration.tcl
+++ b/site_ansto/instrument/reflectometer/motor_configuration.tcl
@@ -1,5 +1,5 @@
-# $Revision: 1.12 $
-# $Date: 2007-03-19 03:06:13 $
+# $Revision: 1.13 $
+# $Date: 2007-03-19 03:08:13 $
 # Author: Ferdi Franceschini (ffr@ansto.gov.au)
 # Last revision by: $Author: dcl $
 
@@ -49,15 +49,15 @@ set dz_home 7805000
 set slitStepRate  20125
 
 #Measured slit gap, in units, after homing on limit switches
-set ss1h_Gap       52.5
-set ss1v_Gap      205.9
-set ss2h_Gap       51.3
-set ss2v_Gap      203.8
+set ss1h_Gap       56.7
+set ss1v_Gap       54.5
+set ss2h_Gap        9.1
+set ss2v_Gap       23.1
 
-set ss3h_Gap        7.5
-set ss3v_Gap       28.5
-set ss4h_Gap       12.0
-set ss4v_Gap       24.0
+set ss3h_Gap        7.4
+set ss3v_Gap       28.6
+set ss4h_Gap       12.1
+set ss4v_Gap       23.6
 
 set ss1r_Home [expr $ss1h_Gap/2*$slitStepRate]
 set ss1l_Home [expr $ss1h_Gap/2*$slitStepRate]
@@ -352,7 +352,7 @@ dz home 0
 # Slit 1, lower
 Motor ss1d DMC2280 [params \
   multichan dmc_mc3\
-  axis A\
+  axis D\
   units mm\
   hardlowerlim [expr $vertSlitHome - $vertSlitLowRange]\
   hardupperlim [expr $vertSlitHome + $vertSlitUpRange]\
@@ -368,7 +368,7 @@ ss1d home 0
 # Slit 1, upper
 Motor ss1u DMC2280 [params \
   multichan dmc_mc3\
-  axis B\
+  axis C\
   units mm\
   hardlowerlim [expr $vertSlitHome - $vertSlitLowRange]\
   hardupperlim [expr $vertSlitHome + $vertSlitUpRange]\
@@ -384,7 +384,7 @@ ss1u home 0
 # Slit 1, left
 Motor ss1l DMC2280 [params \
   multichan dmc_mc3\
-  axis C\
+  axis A\
   units mm\
   hardlowerlim [expr $horSlitHome - $horSlitLowRange]\
   hardupperlim [expr $horSlitHome + $horSlitUpRange]\
@@ -400,7 +400,7 @@ ss1l home 0
 # Slit 1, right
 Motor ss1r DMC2280 [params \
   multichan dmc_mc3\
-  axis D\
+  axis B\
   units mm\
   hardlowerlim [expr $horSlitHome - $horSlitLowRange]\
   hardupperlim [expr $horSlitHome + $horSlitUpRange]\
@@ -416,7 +416,7 @@ ss1r home 0
 # Slit 2, lower
 Motor ss2d DMC2280 [params \
   multichan dmc_mc3\
-  axis E\
+  axis H\
   units mm\
   hardlowerlim [expr $vertSlitHome - $vertSlitLowRange]\
   hardupperlim [expr $vertSlitHome + $vertSlitUpRange]\
@@ -432,7 +432,7 @@ ss2d home 0
 # Slit 2, upper
 Motor ss2u DMC2280 [params \
   multichan dmc_mc3\
-  axis F\
+  axis G\
   units mm\
   hardlowerlim [expr $vertSlitHome - $vertSlitLowRange]\
   hardupperlim [expr $vertSlitHome + $vertSlitUpRange]\
@@ -448,7 +448,7 @@ ss2u home 0
 # Slit 2, left
 Motor ss2l DMC2280 [params \
   multichan dmc_mc3\
-  axis G\
+  axis E\
   units mm\
   hardlowerlim [expr $horSlitHome - $horSlitLowRange]\
   hardupperlim [expr $horSlitHome + $horSlitUpRange]\
@@ -464,7 +464,7 @@ ss2l home 0
 # Slit 2, right
 Motor ss2r DMC2280 [params \
   multichan dmc_mc3\
-  axis H\
+  axis F\
   units mm\
   hardlowerlim [expr $horSlitHome - $horSlitLowRange]\
   hardupperlim [expr $horSlitHome + $horSlitUpRange]\
@@ -670,8 +670,8 @@ proc set_gap_offset {m1 m2 val} {
   set S2 [SplitReply [$m2]]
   set currentoffset [expr ($S1 + $S2)/2.0 ]
   set diff [expr $val - $currentoffset]
-  set newD1R [expr $S1 + $diff/2]
-  set newD1L [expr $S2 + $diff/2]
+  set newD1R [expr $S1 + $diff]
+  set newD1L [expr $S2 + $diff]
   return "$m1=$newD1R,$m2=$newD1L"
 }