Hello all, welcome to the many newcomers to B+ing...
About noises overhead, the constant squeaking and other cabinet sounds from woodwork of cab overhead has been the most low quality aspect of my experience w/ the TL 213, and it finally led me to remove the big TV, but that only eliminated TV bounce sounds from real bad rough spots. High pitched squeaks of wood rubbing wood may actually be more persistent now w/o the TV, and it is always there at fairly slow speeds on all but the smoothest surfaces. At travel speeds, the noise gods are with us, as the low-pitched tire roar and wind noises drown out the high pitch squeaks.
When once I asked, other B+ folks on this forum have reported a range of cabover noise from a few that acknowledged it may exist, to some with NO cabinet noise. The latter group made me feel that my unit was somehow worse than the norm. I would make a special trip to the factory if I thought they would propose a solution. (Ahem, Trail Lite, we know you have to be interested in this B+ forum thread...)
As it stands, I am taking my wife's advice and ignoring sounds I cannot pinpoint as much as possible - I am sure she worries about what I would take out next!
I reported earlier that the whip antenhat came w/ my digital/analog USB tuner was better than the crankup batwing antenna of the RV when pulling in signals, but it simply depends. Near Houston in a wooded SP, the batwing pulled in a bunch of stations while the whip antenna failed to do much at all.
2005 Trail Lite 213 B-Plus w/ 6.0 Chevy