diff --git a/site_ansto/instrument/sans/config/motors/motor_configuration.tcl b/site_ansto/instrument/sans/config/motors/motor_configuration.tcl
index 40bc1e95..8143745d 100644
--- a/site_ansto/instrument/sans/config/motors/motor_configuration.tcl
+++ b/site_ansto/instrument/sans/config/motors/motor_configuration.tcl
@@ -1,5 +1,5 @@
-# $Revision: 1.13 $
-# $Date: 2007-10-29 02:59:58 $
+# $Revision: 1.14 $
+# $Date: 2007-12-06 23:19:01 $
 # Author: Ferdi Franceschini (ffr@ansto.gov.au)
 # Last revision by: $Author: dcl $
 
@@ -53,8 +53,8 @@ set apx_Home 7500000
 set apz_Home 7500000
 set att_Home 7500000
 
-set bsx_Home 22358693
-set bsz_Home 7882500
+set bsx_Home 7831707
+set bsz_Home 10143000
 set bs5_Home 7500000
 set bs4_Home 7500000
 set bs3_Home 7500000
@@ -349,6 +349,7 @@ det home 0
 det speed 20
 
 # Detector translation across beam [-50,450] mm
+# Looks like an non-metric screw pitch 0.2 inches / turn
 Motor detoff $motor_driver_type [params \
   asyncqueue mc1\
   host mc1-quokka\
@@ -360,10 +361,10 @@ Motor detoff $motor_driver_type [params \
   maxSpeed 10\
   maxAccel 1\
   maxDecel 10\
-  stepsPerX [expr -(25000.0*3.0)/5.0]\
+  stepsPerX [expr -(25000.0*3.0)/5.08]\
   absEnc 1\
   absEncHome $detoff_Home\
-  cntsPerX [expr 8192.0/5.0]]
+  cntsPerX [expr 8192.0/5.08]]
 detoff part detector
 detoff long_name detector_x
 detoff softlowerlim -50
@@ -779,19 +780,19 @@ Motor bsx $motor_driver_type [params \
   port pmc4-quokka\
   axis A\
   units mm\
-  hardlowerlim -100\
-  hardupperlim 300\
+  hardlowerlim -200\
+  hardupperlim 200\
   maxSpeed 1\
   maxAccel 1\
   maxDecel 5\
-  stepsPerX 25000\
+  stepsPerX [expr -(25000.0*7.0)/5.0/1.02]\
   absEnc 1\
   absEncHome $bsx_Home\
-  cntsPerX 8192]
+  cntsPerX [expr 8192.0/5.0/1.02]]
 bsx part detector
 bsx long_name bsx
-bsx softlowerlim -100
-bsx softupperlim 300
+bsx softlowerlim -200
+bsx softupperlim 200
 bsx home 0
 
 # beam stop vertical [-240,100] mm
@@ -806,10 +807,10 @@ Motor bsz $motor_driver_type [params \
   maxSpeed 1\
   maxAccel 1\
   maxDecel 5\
-  stepsPerX 25000\
+  stepsPerX [expr (25000.0*7.0)/5.0/1.02]\
   absEnc 1\
   absEncHome $bsz_Home\
-  cntsPerX 8192]
+  cntsPerX [expr (8192.0*7.0)/5.0/1.02]]
 bsz part detector
 bsz long_name bsz
 bsz softlowerlim -240
@@ -828,7 +829,7 @@ Motor bs5 $motor_driver_type [params \
   maxSpeed 1\
   maxAccel 1\
   maxDecel 5\
-  stepsPerX 25000\
+  stepsPerX -25000\
   motorHome $bs5_Home]
 bs5 part detector
 bs5 long_name bs5
@@ -848,7 +849,7 @@ Motor bs4 $motor_driver_type [params \
   maxSpeed 1\
   maxAccel 1\
   maxDecel 5\
-  stepsPerX 25000\
+  stepsPerX -25000\
   motorHome $bs4_Home]
 bs4 part detector
 bs4 long_name bs4
@@ -888,7 +889,7 @@ Motor bs2 $motor_driver_type [params \
   maxSpeed 1\
   maxAccel 1\
   maxDecel 5\
-  stepsPerX 25000\
+  stepsPerX -25000\
   motorHome $bs2_Home]
 bs2 part detector
 bs2 long_name bs2