Physics help

Happy early access day!

I was trying to recreate a LEGO set I had as a kid to try and get used to building. It has this hinged back window, and I wanted to use bearings to make it physics-interactable. However, the whole thing spins wildly when unfrozen. I tried taking some bricks off and try to pinpoint a particular brick that is causing it, but it seems to happen regardless. Is there some combination of collision channels on the Manipulator I can use to prevent this from happening?

The set is #5867 "Creator Super Speedster" if you're curious.