diff --git a/script/optics/ExitSlitYScan.py b/script/optics/ExitSlitYScan.py
index 44e9e496..670270db 100644
--- a/script/optics/ExitSlitYScan.py
+++ b/script/optics/ExitSlitYScan.py
@@ -8,8 +8,8 @@ set keithleys manually to "poll curr fast" and fixed range (2 uA for diode, 2 nA
 
 POSITIONERS = (ExitSlitY)
 SENSORS = (SampleCurrent,RefCurrent, MachineCurrent)
-STARTPOS = (5.0)
-ENDPOS = (0.0)
+STARTPOS = (1.0)
+ENDPOS = (-0.5)
 #STEPS = -0.01
 DWELL = 0.1
 TOTAL_TIME = 120