I've seen it mentioned, but haven't seen if it has been fixed yet or not. I have two rotatrons setup side by side on two sides of my landing craft. I've got ibeams going straight up and down that are attached to these 4 rotatrons. I've setup the group so that when I activate the motors, they move so that the ibeams are at about a 145 degree angle when they hit the limit, and then back to 0 degress. The problem is that when I move these back and forth enough times, I start to see that the angle of the ibeams is creeping slowly towards each other at the "rest" state. Using version .19.2 with ksp .25 on 32-bit.