I just bought a Trail Lite B+ 211s with 8.1 Chevy engine. This is my fifth motorhome (others range from an old 20' Vagabond, and three Winnegagos, from 19 to 32'. This vehicle is fantastic. I am...
Regarding finding the "studs", I found that when conditions are right, you can easily find the roof frame tubes. Due to differences in temperature, when there's dew on the roof, the frame areas tend not to be "dewed". I went up with a marker one morning and put some marks where the frames were. I haven't seen the same effect on the sides, though. I was looking for the roof tubes for mounting a cargo carrier on the roof (but ended up not doing it anyway).