I have a World Models P-51 GS that I have removed the mechanical retracs from and replaced with spring air. 1st time to have retracts and I have what will seem to be an easy question. I have a JR retract servo with 160Deg of movement. If I tame the movement down, can I use the servo to actuate the air valve? If I do tame it down and it doesn't make its full turn, will it continue to put a drain on the battery?