Thanks for all the input!! I don't know why contacting Thor didn't occur to me. And, thanks for the link to Hehr, based on what I can see from the website (and the detailed PDF), it looks like that is in fact the door I have.
I don't have any pics of the actual problem right now, I'll see if I can get some tomorrow after work.
The door RV door has been sagging for quite a while, and only recently realized that it's because the top hinge his bent. Because of this bend, the door latch barely works and the door hits at top edge and bottom below the latch.
I searched and haven't found any mention of this kind of problem before, but probably missed it.
Any suggestions? I think the previous owner had a run-in with a tree long ago, which I think explains the some of the problem, and I think the trip to Burning Man explains the majority. (Many very drunk people going in and out and hanging on the door.)
Anybody done anything like this? I'm not even sure where to find replacement doors. Are they somewhat standardized?