When you engage spotlock should the foot pedal be level with the head unit pointing straight ahead? Or it doesn't matter the position of the head unit or foot pedal when you use spotlock? Reason for the question, sometimes when I have spotlock engage the GPS will find the coordinates the head unit will spin and the toe of the foot pedal goes all the way down and disengage spotlock. My batteries are only two years old. new foot sensor board, has been indexed twice.