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 it with support and with the flat surface down against the bed.

[Mounting Instructions] Place the spring/rubber band on one backlash reducer and attach/slide the part over the joint. Then put the spring on the other backlash reducer and pull it away to tense the spring and slide the over the other joint, this will be the easiest way to mount the part.

IMPORTANT [1]: Remote the dust filter of the fan cooling the hot end before mounting these backlash reducers! (Fan pulls air from the ho