I need some help in getting the slide out to work, the switch for the arm locks is working but the switch to make it go out is not. I have called the tech help line at Airstream and was told to hold the two switches behind the arms that lock the s/o and bump the switch, this did not work. I called AS again and was told to check the black box that controls the motor for the SO. How do I know if the box is bad? Could it be this or the switch for the SO? I could use some help if anyone knows what it could be.