<span style="font-size: small; ">You may have damaged the servo <!StartFragment><span style="font-family: Arial; ">potentiometer and now the servo has no position reference. Servo is probably toast and needs to be replaced. Verify your servo connections by moving the elevator stick on the radio while at the same time moving the wires around. But my guess is that they aren't the issue.</span></span><!EndFragment>