I went to the flying field to fly my T.F.310, was doing my preflight check to make sure everything was hooked up right. When I let go of the aileron stick from full deflection, instead of the servo stopping quickly it would go back and forth a few times then stop. There are two servos on a Y harness but only the one would do this. So I went home thinking the servo pot was probably bad. But now it wont do it again. Ive never noticed anything like this before. Any thoughts?