I've heard countless horror stories about the windows, but my experience hasn't been that at all. The 27' is the same as the 29', and mine came out easily. It sounds like some idiot may have put yours in with 5200, and it's a common rookie mistake, as this unholy goop is sold so prevalently. Very sad. They should require signatures to buy it like they do antihistamines. And you may be a victim.
If you can get it out, and I've heard some success with prying, and simultaneously soaking the horrid stuff with acetones, goo-gone, (or whatever that stuff is called).
The frames come apart simply, and go back together about the same. The glazing was available at the very first glass shop I walked into, and because of my outrageous good looks, and charming personality, the lady there just GAVE me the stuff. (Actually, when she found out that I work on boats, it was a sympathy gesture, akin to feeding the poor). She said the glazing was common as dirt.
I first put them in with closed cell foam, as Ericson recommended, but it also alluded to the fact that you should re-bed them every year or so. Say WHAT? Nay nay said I. And so I put them back with the butyl. More gooder.
I could have done this stone drunk, blindfolded, in a hurricane, with a rusty and bent screwdriver. In fact, that's EXACTLY how I did it.
damn lazy woman wouldn't..