Anti Z wobble for TR8x2 screws

Anti Z wobble part for TR8x2 screws based on Alex_neon's nice thing.
This one is a bit wider and has a cut out to make it compatible with Javivi001's X carriage (http://www.thingiverse.com/thing:1158265).

This is for the left side, just mirror it in your slicer of choice to print the one for the right side.

Edit: New version uploaded. The old one didn't really fit and was uncessarily big. New version works fine (and is actually tested).