X Axis Adjustable Motor Mount

This accessory is used together with my X-axis tensioner (see:http://www.thingiverse.com/thing:253357) to be able to adjust the belt correctly if you want to change the belt type. In my case i´m using a GT2 belt with 2 pulleys á 16 teeth.
Because of changing the original pulley diameter to a smaller one, i searched for a better way to adjust my new belt system.

Update in progress:
- removing chamfer on frame mounting holes
- increasing distance between switch and motor block (for cab