diff --git a/slic/devices/xoptics/slits/old/slitblades.py b/slic/devices/xoptics/slits/old/slitblades.py
new file mode 100644
index 00000000..62d85add
--- /dev/null
+++ b/slic/devices/xoptics/slits/old/slitblades.py
@@ -0,0 +1,38 @@
+from slic.devices.general.motor import Motor
+
+
+class SlitBlades:
+
+    def __init__(self, ID, mot1, mot2):
+        self.ID = ID
+        self.mot1 = Motor(mot1)
+        self.mot2 = Motor(mot2)
+
+    @classmethod
+    def from_motor_name(cls, ID, motor_name="MOTOR_X"):
+        mot1 = ID + ":" + motor_name + "1"
+        mot2 = ID + ":" + motor_name + "2"
+        return cls(ID, mot1, mot2)
+
+    def get_gap(self):
+        return self.mot2.get_current_value() - self.mot1.get_current_value()
+
+    def get_pos(self):
+        return (self.mot1.get_current_value() + self.mot2.get_current_value()) / 2
+
+    def set_gap(self, value, pos=None):
+        if pos is None:
+            pos = self.get_pos()
+        t1 = self.mot1.set_target_value(pos - value / 2)
+        t2 = self.mot2.set_target_value(pos + value / 2)
+        return t1, t2
+
+    def set_pos(self, value, gap=None):
+        if gap is None:
+            gap = self.get_gap()
+        t1 = self.mot1.set_target_value(value - gap / 2)
+        t2 = self.mot2.set_target_value(value + gap / 2)
+        return t1, t2
+
+
+
diff --git a/slic/devices/xoptics/slits/old/slitunit.py b/slic/devices/xoptics/slits/old/slitunit.py
index cf43595e..7ebcc2e1 100644
--- a/slic/devices/xoptics/slits/old/slitunit.py
+++ b/slic/devices/xoptics/slits/old/slitunit.py
@@ -1,16 +1,13 @@
-from slic.devices.general.motor import Motor
-
 from slitbase import SlitBase
+from slitblades import SlitBlades
 
 
 class SlitUnit(SlitBase):
 
-    def __init__(self, ID, x1="MOTOR_X1", x2="MOTOR_X2", y1="MOTOR_Y1", y2="MOTOR_Y2"):
+    def __init__(self, ID, x1, x2, y1, y2):
         self.ID = ID
-        self.x1 = Motor(x1)
-        self.x2 = Motor(x2)
-        self.y1 = Motor(y1)
-        self.y2 = Motor(y2)
+        self.x = SlitBlades(ID + "-X", x1, x2)
+        self.y = SlitBlades(ID + "-Y", y1, y2)
 
     @classmethod
     def from_motor_name(cls, ID, motor_name="MOTOR_"):
@@ -18,47 +15,31 @@ class SlitUnit(SlitBase):
         x2 = ID + ":" + motor_name + "X2"
         y1 = ID + ":" + motor_name + "Y1"
         y2 = ID + ":" + motor_name + "Y2"
-        return cls(ID, x1=x1, x2=x2, y1=y1, y2=y2)
+        return cls(ID, x1, x2, y1, y2)
 
     def get_hg(self):
-        return self.x2.get_current_value() - self.x1.get_current_value()
+        return self.x.get_gap()
 
     def get_vg(self):
-        return self.y2.get_current_value() - self.y1.get_current_value()
+        return self.y.get_gap
 
     def get_ho(self):
-        return (self.x1.get_current_value() + self.x2.get_current_value()) / 2
+        return self.x.get_pos()
 
     def get_vo(self):
-        return (self.y1.get_current_value() + self.y2.get_current_value()) / 2
+        return self.y.get_pos()
 
-    def set_hg(self, value, ho=None):
-        if ho is None:
-            ho = self.get_ho()
-        c1 = self.x1.set_target_value(ho - value / 2)
-        c2 = self.x2.set_target_value(ho + value / 2)
-        return c1, c2
+    def set_hg(self, *args, **kwargs):
+        return self.x.set_gap(*args, **kwargs)
 
-    def set_vg(self, value, vo=None):
-        if vo is None:
-            vo = self.get_vo()
-        c1 = self.y1.set_target_value(vo - value / 2)
-        c2 = self.y2.set_target_value(vo + value / 2)
-        return c1, c2
+    def set_vg(self, *args, **kwargs):
+        return self.y.set_gap(*args, **kwargs)
 
-    def set_ho(self, value, hg=None):
-        if hg is None:
-            hg = self.get_hg()
-        c1 = self.x1.set_target_value(value - hg / 2)
-        c2 = self.x2.set_target_value(value + hg / 2)
-        return c1, c2
+    def set_ho(self, *args, **kwargs):
+        return self.x.set_pos(*args, **kwargs)
 
-    def set_vo(self, value, vg=None):
-        if vg is None:
-            vg = self.get_vg()
-        c1 = self.y1.set_target_value(value - vg / 2)
-        c2 = self.y2.set_target_value(value + vg / 2)
-        return c1, c2
+    def set_vo(self, *args, **kwargs):
+        return self.y.set_pos(*args, **kwargs)
 
 
 
diff --git a/slic/devices/xoptics/slits/old/slitunitjj.py b/slic/devices/xoptics/slits/old/slitunitjj.py
index cfc5f7b8..b32aa9d3 100644
--- a/slic/devices/xoptics/slits/old/slitunitjj.py
+++ b/slic/devices/xoptics/slits/old/slitunitjj.py
@@ -4,7 +4,11 @@ from slitunit import SlitUnit
 class SlitUnitJJ(SlitUnit):
 
     def __init__(self, ID):
-        super().__init__(ID, x1="MOT3", x2="MOT2", y1="MOT5", y2="MOT4")
+        x1 = ID + ":MOT3"
+        x2 = ID + ":MOT2"
+        y1 = ID + ":MOT5"
+        y2 = ID + ":MOT4"
+        super().__init__(ID, x1, x2, y1, y2)