Modified tensioner and shafts for The UnLimbited Arm v2.0 - Alfie Edition

Modified tensioner for small version of the [The UnLimbited Arm v2.0 - Alfie Edition](http://www.thingiverse.com/thing:1672381). When attempting to print the tensioner the tension shafts would not print correctly (not enough material) so I had to replace them with this. Hope this helps someone else. Used Boolean operations in Blender to accomplish this.