I recently bought an RV9 with an analog AP-1 wing-leveler AP (no heading hooked up). It levels one alieron, but when, on the ground, i push the stick the other direction (this might not be a great test) the servo just slips and slips. Is the servo bad, and, if so, how do i get another one (i think they are out of business). Thank you, David Shevick 415.794.2084