I would suggest you have no known rain or leak issues. On my Safari 25 I pulled some screws out that were holding the wardrobe to the wall. The heads looked fine but the part of the screw behind the wall was rusted. My skylight was leaking and the water was running down the back side of the interior skin. It never came out where it was visible.
“You cannot reason someone out of a position they have not been reasoned into"
Al, K5TAN and Missy, N4RGO WBCCI 1322
2002 Classic 30 Slideout -S/OS #004
2013 Dodge 2500 Laramie 4x4 Megacab Cummins