This design also includes a place to put in a standard 608zz skate bearing to brace the top of the z-rod (requires another piece from the dedicated z-rod holder)

I don't want to put any more effort into this as I plan on doing a full rebuild soon. I uploaded the solidworks source files and step files along with the stl files so hopefully most of you will be able to edit these parts to your need!

Print the following

1x TR mount
1x TL mount
1x base mount
3x 15mm pulley
2x 20mm pulley
5x pin

See Phantom's thingiverse link for an image of how it should be setup. The base mount uses the same screws that go into the stepper, and the two top pieces use the same one that goes into the top of the rod (note you may have to buy longer screws for each part)