I have had a similar issue still on going. Never had a camper in mine.
From what i can see and feel it appears the top of the door frame needs a slight tweek. Was thinking about doing the latch adjustment but the body gaps are good and panels flush. Latch and unlatch pressure feel good. I may be wrong but i could swear i read on another forum about a few people having this issue. Been way to swamped at work with fcode skyliners to get back on my own stuff.