How have your trailers held up camping in the mountains?

I've been pleased with how well the Amerilite has done on the back roads. I've noticed a screw that needed tightening, the faceplate of the furnace is scuffing the cabinet behind it. Other than that it's the usual fridge, cupboard or medicine cabinet door opens.

I don't mind the rocks, ruts and washouts, we can pick our way over those as slow as needed. It's miles of washboards that I dislike.