got 5645's in my new gasser and noticed that the elevator servos (dual) move same till i get to the upper throws, then the one continues to move aftr the other has stopped.( just a few deg's).. there is a servo reverser lead on them and when i installed it i did notice a small potentiometer (spelling sucks) on the small ckt. brd in the reverser lead . is that for tuning them to work the same ..did'ent want to jst start turning it.. anybody seen this ?? all the stuff is brand new..thanx tim