We also have a 2013 truck camper 10 and had the door replaced, under warranty. Our 21RBS was on us. The replacement doors on both campers have been flawless. Thinking back, the guy I talked to at Challenger said something about sub materials used due to Livin Lite trying to keep the cost down. We still have both campers and with the TC door replaced in 2014 or 15 and the 21RBS was 2 years ago. It's all good now.