Top Left & Right Z Axis Holder for Hephestos - Anti Screw Wobble

I've changed the freecad file of the Hephestos Parts and added a bit to hold the Z Axis Screws in Place.
The additional Hole is meant to hold a Ball Bearing in which the Z Axis Screw is held in Place.

Source in Form of a Freecad file is included.
But i was not able to use all of the Pipeline.