diff --git a/eco/bernina/config.py b/eco/bernina/config.py
index eec799c..0a7a06f 100755
--- a/eco/bernina/config.py
+++ b/eco/bernina/config.py
@@ -196,6 +196,15 @@ components = [
         "desc": "Bernina beamline reference laser before KBs",
         "type": "eco.xoptics.reflaser:RefLaser_Aramis",
     },
+    {
+        "name": "slitAtt_test",
+        "args": ["SAROP21-OAPU136"],
+        "kwargs": {},
+        "z_und": 136,
+        "desc": "Slits behind attenuator",
+        "type": "eco.xoptics.slits:SlitPosWidth",
+        "lazy":False,
+    },
     {
         "name": "slitAtt",
         "args": ["SAROP21-OAPU136"],
@@ -244,14 +253,14 @@ components = [
         "type": "eco.xoptics.KBhor:KBhor",
         "kwargs": {},
     },
-    {
-        "name": "slitKb",
-        "args": [],
-        "kwargs": {"Id": "SARES20"},
-        "z_und": 141,
-        "desc": "Slits behind Kb",
-        "type": "eco.xoptics.slits:SlitBladesJJ_old",
-    },
+    # {
+        # "name": "slitKb",
+        # "args": [],
+        # "kwargs": {"Id": "SARES20"},
+        # "z_und": 141,
+        # "desc": "Slits behind Kb",
+        # "type": "eco.xoptics.slits:SlitBladesJJ_old",
+    # },
     {
         "args": [],
         "name": "gps",
diff --git a/eco/xoptics/slits.py b/eco/xoptics/slits.py
index ace8743..363d26e 100755
--- a/eco/xoptics/slits.py
+++ b/eco/xoptics/slits.py
@@ -1,6 +1,7 @@
 from ..devices_general.motors import MotorRecord
 from ..devices_general.adjustable import AdjustableVirtual
 from ..aliases import Alias, append_object_to_object
+from functools import partial
 
 
 class SlitBlades:
@@ -100,7 +101,7 @@ class SlitPosWidth:
         append_object_to_object(self, MotorRecord, pvname + ":MOTOR_W", name="hgap")
         append_object_to_object(self, MotorRecord, pvname + ":MOTOR_H", name="vgap")
 
-        def getup(pos,gap):
+        def getblade(pos,gap,direction=1):
             return pos + direction*gap/2
 
         def setblade(bde,pos,gap,direction=1):
@@ -127,38 +128,38 @@ class SlitPosWidth:
         append_object_to_object(
             self,
             AdjustableVirtual,
-            [self.right, self.left],
-            getgap,
-            setwidth,
+            [self.vpos, self.vgap],
+            partial(getblade,direction=1),
+            partial(setblade,direction=1),
             set_current_value=True,
-            name="hgap",
+            name="up"
         )
         append_object_to_object(
             self,
             AdjustableVirtual,
-            [self.down, self.up],
-            getgap,
-            setheight,
+            [self.vpos, self.vgap],
+            partial(getblade,direction=-1),
+            partial(setblade,direction=-1),
             set_current_value=True,
-            name="vgap",
+            name="down"
         )
         append_object_to_object(
             self,
             AdjustableVirtual,
-            [self.right, self.left],
-            getpos,
-            sethpos,
+            [self.hpos, self.hgap],
+            partial(getblade,direction=1),
+            partial(setblade,direction=1),
             set_current_value=True,
-            name="hpos",
+            name="left"
         )
         append_object_to_object(
             self,
             AdjustableVirtual,
-            [self.down, self.up],
-            getpos,
-            setvpos,
+            [self.hpos, self.hgap],
+            partial(getblade,direction=-1),
+            partial(setblade,direction=-1),
             set_current_value=True,
-            name="vpos",
+            name="right"
         )
 
     def __call__(self, *args):