monoprice mini select Extruder Lever Arm

Warning: The cover is as of yet untested. Tell me in the comments if it needs to be adjusted. This is a drop-in replacement for the monoprice mini select extruder arm and cover. After mine broke the day after my printer was delivered, I found Makerbot's Replicator 2 extruder design to be the same except for the bearing size. I modified it in Onshape, and the bearing from the MP Select Mini fits snugly. If you had to replace parts other than the arm or cover of the extruder, Makerbot's other part