diff --git a/script/optics/ExitSlitYScan.py b/script/optics/ExitSlitYScan.py
index 2fb41461..b4c6b7bb 100644
--- a/script/optics/ExitSlitYScan.py
+++ b/script/optics/ExitSlitYScan.py
@@ -9,22 +9,23 @@ set keithleys manually to "poll curr slow" and fixed range (20 nA for diode, 200
 POSITIONERS = (ExitSlitY)
 SENSORS = (SampleCurrent,RefCurrent, MachineCurrent)
 STARTPOS = (0.5)
-ENDPOS = (-0.25)
+ENDPOS = (-0.3)
 #STEPS = -0.01
 DWELL = 0.1
-TOTAL_TIME = 150
-STEPS = int(TOTAL_TIME / DWELL) + 1
+#TOTAL_TIME = 150
+#STEPS = int(TOTAL_TIME / DWELL) + 1
+STEPS = 200
 
 def trig():
     wait_beam()
     #caput(KEI_RMU + "DOINIT", 1)
     #time.sleep(0.1)
     #caput(KEI_RMU + "DOTRIGGER", 1)
-    time.sleep(DWELL * 1.1)
+    time.sleep(DWELL)
     #caput(KEI_RMU + "DOFETCH", 1)
 
 #set_adc_averaging(dwelltime=DWELL)
 #set_exec_pars(compression=True, shuffle=True)
 set_exec_pars(compression=True)
-#lscan(POSITIONERS, SENSORS, STARTPOS, ENDPOS, STEPS, LATENCY, before_read=trig, after_read=after_readout)
-cscan(POSITIONERS, SENSORS, STARTPOS, ENDPOS, STEPS, time=TOTAL_TIME, after_read=after_readout, check_positions = False)
+lscan(POSITIONERS, SENSORS, STARTPOS, ENDPOS, STEPS, LATENCY, before_read=trig, after_read=after_readout)
+#cscan(POSITIONERS, SENSORS, STARTPOS, ENDPOS, STEPS, time=TOTAL_TIME, after_read=after_readout, check_positions = False)