BEWARE of Scamp trailers. Mine is a 2010, 13 foot, deluxe model with bathroom. Here is my experience: 2011: Broken water filter attachment due to sloppy installation. 2011: Particle board counte...
About the roof fan leak: it is my understanding that all Scamp roof vents could benefit from dismounting the vent and putting butyl tape under it, then screwing it back down. The factory does not seal these very well; I think they only run a bead of caulk around the perimeter.
If you're not too far away, I'd give you $5,002. ;)