When i get this problem, the autostruts are deactivated, and the hinge pivotron i'm using is connecting a 2.5m air breathing engine to a 2.5m service bay, so it's not really a leg or a wheel and it doesn't connect directly towards the heaviest part of the ship, but it's a custom VTOL engine for my plane. One note is that i placed wings and control surfaces around those connected parts, and they do slightly peek into the moving parts, but i tried to move them further from the connected parts (the engine, the hinge pivotron and the cargo bay) with the move tool, and it didn't fix anything, is this still the same issue or is it a different one?