Does your camper have slides, or more slides on one side than the other. If the trailer weighs more on one side than the other, this could the frame to appear to be leaning.
In the past, there were many posts on these forums about TT and 5ers that were parked level, but when the slides came out, the trailer leaned. The reason was because of the weight of the slides being greater on one side than the other, causing the lean.
The solutions were many, but the simplest was to just measure the difference in the height when the slides were out (remember, they were level when slides were retracted). Then when parking, put that much lumber (thickness) under the tires on the low side when unhitching. Then when the slides were retracted, the weight would cause that side to sag down, but the end was a level floor. Then the stabilizer jacks were deployed and everything was fine.
The other solution was to add an extra leaf spring on the side that would be low to make it more stout on that side. But when traveling then, one side would be softer, the other side more stout, causing some strange performance on the road.
My suspicion in your case is, the trailer simply weighs heavier on one side, causing the lean. What kid of toys do you have in the garage that might not be evenly weight distributed?
