Hmm... I guess my main question is really: is it unsafe to heat the tubes after they're sealed?

I want to seal the stuff when it's nice and hot and dry in there... but don't want to heat the whole tube an extra time to ensure there's no more water in... so it seems to make sense to seal the tubes right after I attach the seat stay top and bottom. The only drawback is that I'll be adding the brake bridge later after I've checked alignment, etc.

Do I have to worry about pressure buildup in the sealed seat stay tube when I put that bridge on (it'll have it's own vents)?

Thanks,
Jim