I recently purchased a 2023 Imagine 2600RB from a dealer. The unit was brand new and had apparently been sitting quite awhile. As the unit has been heated the interior wall on the right and left sides of the bedroom and bathroom are warping significantly. In addition the cabinet doors are warping. In addition, the wallpaper on the slide out has bubbled and the slide out trim has warped. Has anyone else had the issue. Any suggestions would be appreciated. Thank you