I have an 02 Holiday Rambler Endeavor. When it rains and the coach is tilted slightly the wrong way, I get a wet spot inside the lower front corner of the bedroom slide. Looking at it from the outsi...
I had to have both of mine adjusted and took it to a shop. Rear required a couple of shims on the slide bottom and the front they adjusted the slide mechanism. Apparently quite common and quite easy. Over time the area where the floor slides on the rollers developed a slight depression so slide sagged a bit. Like I said, common and easy fix for someone who know what they are doing.
My slides are a flush fit so a little bit of misalignment made them look odd but no functional problem.