Bear-BMG Fusion Hairlock Cover

I am still trying to improve the reliability of my MMU2 so I decided to try jltx's Hairlock design on my Bear-BMG Fusion remix. You need the arm (SP_Hairlock_b5.stl) from jltx's original design and set up the whole thing using jltx's instructions.

This remix needs 6mm M3 screws for the cover to attach to the extruder body and to attach the brace to the cover. The brace uses the magnet hole to attach to the extruder and can be removed without opening the extruder.

Additionally I modded th