First of all, sorry if this is confusing. I am not a rigger, and this is my first time doing something like this. However, I am rigging a crane for an internship, and I do not know how to fix a weird bug where when I rotate the crane, the middle of it goes up instead of just rotating. It used to make the whole front of the crane go upwards when I rotated it, but I managed to make it so only the middle goes up. I picked this up after someone did the FullbodyIK, and the piston constraints, I did everything else.