birdbybird - It may sound like lumber, but one of the members mentioned finding a coil of coaxial antennae cable behind a panel. As burlmart mentions, some have noise in the overhead and some don't - we have been the lucky ones. We had a couple rattles which we were able to track down when I had my wife drive. One was the adjustable leg for the dinette and the other was the rollers under the sofa (needed for the slide). Fixed both rattles, adjusted the tire pressure for the actual loaded weight, and we now have an eerie quiet house on wheels. Nice to have you join the B+ topic.