Prusa MMU 2.0 Filament Contraption

I created this to manage the slack when my mmu changes filament. To assemble the arms, place two of the small bearings in the bottom of the arms, 8mm rod pieces in the weight cavities, a v-bearing on the top bearing post, and snap together. Cut the 4mm rod to length and insert it in to the arm holder to install the arms. The screw has a recess for the rod to go in to. The PTFE connectors just screw in to their holes. I have a picture showing the bottom ones installed. If they are backwards