QU-BD Two-Up Pulley mod

This is a modified version of phantomoperator's pulley mod.
I've divided the pulley in two so that it can be printed without the use of support material. (I found that the support material caused more problems than it was solving.)
Haven't made a new pulley wheel for it yet but I'm going to try and use some purchased on ebay.
The title of the item I purchased to use on this is: 10x/20x 624VV V Groove Sealed Ball Bearings Vgroove 4 X 13 X 6mm 3mm Deep
Also I have no idea why one file t