Changes the mount for the MMU2s so that it mounts horizontally with the bed instead of a 45 degree angle. It can aid in setting up the spools/buffer especially if you don't want to use the stock configuration. In addition the FINDA probe should work just a bit better as the 8mm bearing relies on gravity.
Based on original source files found here...https://github.com/prusa3d
Up Next... The Electrical cover w/ an on off switch!
Prusa PETG 250/80
Prusa Slicer 0.2 Quality with the following changes
4 perimeters all aroud
50% infill
all patterns rectilinear.
YMMV
The author hasn't provided the model origin yet.