I just finished scraping my 89 Squarestream roof, basically the same trailer. I used a heat gun and scraper to get all the old sealant off. Some stuff was really hard and I sanded with 220 grit. I've got the whole roof stripped now, and the inside is gutted so I know where all the trouble spots are on theses things. Hopefully the resealing works and I can get started on the new interior. We'll find out in a few weeks.
I'll take some pictures of the bedroom vent hole and show you my theory why it may be leaking. See also, Let the Squarestream Reno begin, in the Squarestream forum.
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