Customizable Anti wobble/backlash for Z-Axis

This one derived from the original maker, I only made more improvement to this especially the structure. This design would have your m3 bolts flushed in the surface and creates seamless anti backlash/wobble z axis thingamajig

The idea here is to accommodate as thin anti wobble/backlash z axis carriage depending on your screw length.

Update 5 september 2015
I adjusted the gap between flange nut mount and hole for smooth rod shorter because having them tight fit might make the wobble stil