I did a search, didn't find anything, but wouldn't be surprised if this has been linked here before:
http://barnplans.com
Basically, engineered plans for do-it-yourself gambrel rafters. The house on the front of the site is a bit of a mess, with way too many gambrel roof lines, but I'm consdering this system for my shop building. I'm not sure building your own rafters saves much money, there's a lot of material in each one. Haven't done the math yet.
gambrel dormers in gambrel roofs where none of the lines match up? Amazing they don't look worse than they do.
But their bi-fold doors might solve a problem for me.
I know I've seen the site at least once. No idea if it was from the forum.
Here are the search results from this site and the old forum for gambrel roofs:
http://countryplans.master.com/texis/master/search/?q=gambrel&s=SS