One of my favorite dry camping spots is in Baton Rouge. It is paved, close to the LSU campus, great for games and tailgating, and not level.
The first time I parked there, I pulled nose in, tail low. Put slides out first, then the air was dumped, then I leveled. Due to the uneven pavement, the rear two levelers almost raised the rear wheels off the ground

and I heard air being "sucked" into the rear air bags.
Now, months later, when I go to the coach after a week or so of sitting parked, all of the air has drained from the rear bags, but the front is still up.
Have I screwed something up?