Hi folks - I’ve got a 2000 Coleman Fleetwood Fairview and I was thinking about putting some Eternabond over the center seam as preventative maintenance. Is there any reason why I can’t just put it over the trim piece and all? Do I need to take that off first? Finally, is the roof strong enough to get on top of when you’re working on it? Not sure how else I’d be able to get it up there... Thanks!