diff --git a/script/optics/ExitSlitYScanKei.py b/script/optics/ExitSlitYScanKei.py
index a6949959..e53cf4fd 100644
--- a/script/optics/ExitSlitYScanKei.py
+++ b/script/optics/ExitSlitYScanKei.py
@@ -65,6 +65,9 @@ def trig():
     caput(KEI_DIODE + "DOFETCH", 1)
     caput(KEI_RMU + "DOFETCH", 1)
 
+#FrontendHSize.write(2.0)
+#FrontendVSize.write(3.0)
+
 try:
     lscan(POSITIONERS, SENSORS, STARTPOS, ENDPOS, STEPS, LATENCY, before_read=trig, after_read=after_readout)
 finally: