I believe I gave you some leads in another post. There should be a manual over ride to crank it in by hand...not an easy job. Before you try cranking, turn of the power switches for the slides (kills brake on motor) and it helps to have about 3 fellow leaning heavily on the slide as someone does the cranking.
Amateur Radio Operator (KE5DFR)|Full-Time! - 2012 6.7L Ford Crew Cab Dually -2013 HitchHiker Champagne 38RLRSB - Travel with one Standard Schnauzer and one small Timneh African Gray Parrot