Something to check on the door lock issue. We have noticed that if our levelers get a little out of calibration, they won't raise the coach correctly. The resulting twist in the motorhome will seize the door to the point that you cannot open it. Recalibrating the levelers solves it. Just a thought.
Brian, Mary, kids, beagle - Moose, and mutt - Maggie.
2012 Greyhawk 31FS
2013 Ford Explorer Toad