Is the RV industry is broken? Warranty for new trailers...

Very salient points by all. I would add for serious issues go to the manufacturer first. If you don't trust your dealer or doubt their expertise to do it right request from the manufacturer the name of a repair facility that can. Keep meticulous records with photos and leave out the drama as the OP has stated. Be firm and insistent but polite/professional. Drama and passion will get you nothing!