While my new Bullet was under warranty last year, I had the same issue on the rear tire passenger side, it was severely leaning in, and the dealer after way too much time replaced it. The service guy mentioned while this normally wasn't a problem in the past, he has been seeing it with the newer Keystone products. Keep in mind however this was Camping World.
Interesting as this was my pasenger side also. Mine is ywo months out of warranty. I will be replacing myself as I can do it cheaper than making two trips to my dealer (plus time). I also will be going one size larger.