So I am having this problem with my MD11 when I am flying by hand with my joystick the elevators either get stuck in the up position or down position causing the plane to either dive or pull up constantly. If will never center. I have checked my joystick calibration and it is fine. It does not do this in any other plane besides the MD11. I have tried re installing the MD-11 and it still does it. Anybody got any ideas as to what might cause this?