Backlash Reducer for Overlord / Overlord Pro

UPDATED ALTERNATIVE VERSION AVAILABLE HERE: http://www.thingiverse.com/thing:1421326

This backlash reducer let you mount a spring or rubber band easily to the arm joints to reduce the backlash of the Dreammaker Overlord / Overlord Pro effector.

Print 12 of these (1 to start with to get your settings right), get some springs of appropriate size/force or rubber bands, and mount them over the joints.
Use at least 50% infill and shell thickness of at least 1,2 mm for a good result. Print