diff --git a/script/optics/ExitSlitYScanKei.py b/script/optics/ExitSlitYScanKei.py
index 09b27fbf..5411c2d7 100644
--- a/script/optics/ExitSlitYScanKei.py
+++ b/script/optics/ExitSlitYScanKei.py
@@ -22,25 +22,25 @@ KEI_RMU = "X03DA-KEITHLEY-2:"
 caput(KEI_DIODE + "READSCAN.SCAN", 0)
 caput(KEI_DIODE + "NPLC", 1)
 caput(KEI_DIODE + "NAVG", DWELL / 0.02)
-caput(KEI_DIODE + "TCOUNT", NSTEPS)
+caput(KEI_DIODE + "TCOUNT", 1)
 caput(KEI_DIODE + "RANGE", 6) # 200 nA
 
 caput(KEI_RMU + "READSCAN.SCAN", 0)
 caput(KEI_RMU + "NPLC", 1)
 caput(KEI_RMU + "NAVG", DWELL / 0.02)
-caput(KEI_RMU + "TCOUNT", NSTEPS)
+caput(KEI_RMU + "TCOUNT", 1)
 caput(KEI_RMU + "RANGE", 8) # 2 nA
 
-caput(KEI_DIODE + "DOINIT", 1)
-caput(KEI_RMU + "DOINIT", 1)
-time.sleep(0.1)
 
 def trig():
     wait_beam()
+    caput(KEI_DIODE + "DOINIT", 1)
+    #caput(KEI_RMU + "DOINIT", 1)
+    time.sleep(1.0)
     caput(KEI_DIODE + "DOTRIGGER", 1)
-    caput(KEI_RMU + "DOTRIGGER", 1)
-    time.sleep(DWELL * 1.5)
+    #caput(KEI_RMU + "DOTRIGGER", 1)
+    time.sleep(DWELL * 2)
     caput(KEI_DIODE + "DOFETCH", 1)
-    caput(KEI_RMU + "DOFETCH", 1)
+    #caput(KEI_RMU + "DOFETCH", 1)
 
 lscan(POSITIONERS, SENSORS, STARTPOS, ENDPOS, STEPS, LATENCY, before_read=trig, after_read=after_readout)