OK Don here's what I was told...almost word for word as to what's in the manual;
Hitching up ...
Back up until there is about a 2-4" clearance between the hitch plate & front of the capture plate. Raise or lower the trailer so the bottom of the capture plate is aligned even with the beginning of the ramp area of the hitch plate (right where it bends downward). He said this will let the capture plate ride up on the ramp and flatten or tilt the hitch plate into a parallel position. make sure lock jaw assembly is completely wrapped around the king pin and handle is securely locked into place.
Unhitching...
After blocking the wheels so it won't roll forward or backwards, back into the trailer slightly and set parking brake while still in gear to relieve pressure from locking mechanism before releasing latch mechanism. Lower jacks to just touching the ground, but don't raise trailer yet. Open lock jaw assembly. He said lower jacks to where the bottom of the capture plate is almost free from or just lightly touching the top of the hitch plate but not so high as to cause the king pin to bind on the lock jaw assembly. Then lower the tailgate, unplug electric & breakaway cable and slowly pull forward.
He also said that this problem is more common than you'd think, that he gets lots of calls from even seasoned veteran RVer's having this problem.