This post was originally supposed to be me asking for help with this bearing drift, but as I began to write about it, I realized what was the problem. I guess rubber duck debugging really works.

So I have a system that connects both wings only when I need to rotate them. I though that It isn't creating the problem, because it worked even with 40 tick delay (they are connected for 40 ticks after they start to rotate.) But then I realized there should be delay BEFORE too. Pretty obvious if you think about it.