Modified Prusa I3 single motor Z mod complete

This is a mod to use a single motor for Z to prevent the X axis from becoming untrammed due to normal 2 motor systems becoming out of sync. It uses Cupcake Z parts.
Specifically:
2 each 5mm bore GT2 2mm pitch 36t pulleys (SDP-SI)
4 each 624ZZ bearings as idlers (Ultimachine)
1 each Cupcake Z belt GT2 2mm pitch, 6mm wide, 424 teeth (SDP-SI)
3 each 5x11x4mm flanged bearings for the 5mm Z screws (VXB)
1 each 5mm to 5mm flex coupler (Adafruit)
8 each 4mm bore fender washers (Ultimachin