hello, I have not experienced that issue. Could you please tell me what situation you had the GP7 in when it would only do 1 in reverse? Were you on a grade? Did you have anything else attached to it? Are you sure the loco was sitting on the tracks correctly?
is it possible your cruise control is set to 1 on the engine you're trying to go reverse in. you cannot activate cruise control while going in reverse but the number it is set to will limit you to that speed
