I am the excited new owner of an '87 Mini-Cruiser ("Mosey", 21', rear kitchen & bath layout) and am grateful to all the great info I found on this site to make an informed decision. But of course, I still have questions, which I will try to put in the proper category. My first question regards the roof. The unit has been kept under cover most of its life, but when I went up and looked at the roof, it looked like it was time to reseal around the vents and seams, and recoat the roof. Is this something I can do myself. And if so, can you point me to the most reliable guides and best products. I am debating whether to install an AC or powered vent fans (a debate for a separate thread), but before doing anything like that, I want to make sure the roof stays tight.