@RL_Dane it doesn't require taking apart, but there are some potentiometers on the board which control current to the motors and I'm tired of how frequently they require adjustment. If they aren't set correctly, you get the leaning tower of Printrbot as the horizontal reference datum gets a small offset layer-to-layer which accumulates over time.

At this point I just don't use it more than a couple times a year. When I factor in the lost time from it going out of alignment, there's usually another means of fabrication which is more efficient. At least with a different machine there'll be different hiccups to work around and it'll be interesting to play with for a bit. So if you feel similarly and want to swap, I'm game. Failing that I think my plan is to exit the 3D printing game and switch over to a smallish laser cutter.