[skyking]

Thanks Bob. What I had in mind was starting with the high point of the template at a point somewhere above the AC unit. If it was scaled up right it should just pass over the back edge of the roof heading down at the 22 degree angle. In front of that it would be straight, connecting with the high point of the existing roof. The whole thing would be curved to fit the roof curvature left to right.
This fairing would take care of the too steep angle as the roof descends aft, cover up the AC, cover up the kitchen vent in back, the fridge, the TV antenna. I would make doors or slots as needed to keep all those functioning properly. I would put a large forward opening hatch over the AC that deploys with a spring and is retracted by a simple rope at the back of the rig. It would be smooth as a baby's derriere and shed water as well.
I can remake the pin box on the trailer and move it forward about 4". I cannot do a slider hitch.
Hidden under all that woodwork is a custom made 5th wheel air ride suspension system that is not adjustable that way.