I just bought a 2016 21 FBRS. It has 3 cracks on the top board of the cabinet above the couch of the slide out. They weren't there when I bought it but 2 weeks later and maybe 250 miles towing they appeared. They look like stress cracks? Anyone else have this problem? I dont see how it can be repaired without being replaced?
I also have a 2016 21FBRS and no cracks on mine either. The way these things are slapped together it's not at all unusual to have random defects like this pop up. Sounds like a pretty straight forward warranty repair to me.