diff --git a/rocolib/library/ServoMotor.py b/rocolib/library/ServoMotor.py
index a3b88ca7fa79c819668fcf516946781da79dc49c..a4f2761937f9fc127b04d1383a7024c423b52312 100644
--- a/rocolib/library/ServoMotor.py
+++ b/rocolib/library/ServoMotor.py
@@ -4,7 +4,7 @@ from rocolib.api.ports import AnchorPort
 from rocolib.utils.utils import decorateGraph
 from rocolib.utils.dimensions import getDim
 from rocolib.utils.transforms import Translate, RotateZ
-from rocolib.utils.numsym import dot
+from rocolib.utils.numsym import dot, deg2rad
 
 
 class ServoMotor(FoldedComponent):
@@ -22,7 +22,7 @@ class ServoMotor(FoldedComponent):
     f = Shape("horn", 0, 0)
     decorateGraph(f, Shape("hole", 1, 1))
     self.addFace(f)
-    self.setInterface("mount", AnchorPort(self, self.getGraph(), "horn", dot(RotateZ(self.p.angle), Translate([0,-dy,dz]))))
+    self.setInterface("mount", AnchorPort(self, self.getGraph(), "horn", dot(RotateZ(deg2rad(self.p.angle)), Translate([0,-dy,dz]))))
 
 if __name__ == "__main__":
     ServoMotor.test()
diff --git a/rocolib/library/SimpleUChannel.py b/rocolib/library/SimpleUChannel.py
index 9f4a52b17abe81b851fedde03c509d178fd843a7..bd9abc23584b2c89a0dada86138cb4620d89a5e2 100644
--- a/rocolib/library/SimpleUChannel.py
+++ b/rocolib/library/SimpleUChannel.py
@@ -9,10 +9,10 @@ class SimpleUChannel(FoldedComponent):
     self.addParameter("width", 50, paramType="length")
     self.addParameter("depth", 20, paramType="length")
 
-    for i in range(3):
-      self.addEdgeInterface("topedge%d" % i, "r%d.e0" % i, ["depth", "width"][i % 2])
-      self.addEdgeInterface("botedge%d" % i, "r%d.e2" % i, ["depth", "width"][i % 2])
-      self.addFaceInterface("face%d" % i, "r%d" % i)
+    for i, nm in enumerate("lcr"):
+      self.addEdgeInterface(f"top{nm}edge", "r%d.e0" % i, ["depth", "width"][i % 2])
+      self.addEdgeInterface(f"bot{nm}edge", "r%d.e2" % i, ["depth", "width"][i % 2])
+      self.addFaceInterface(f"{nm}face", "r%d" % i)
 
     self.addEdgeInterface("ledge", "r0.e3", "length")
     self.addEdgeInterface("redge", "r2.e1", "length")