Tri... I have two lugged frames that are not collectable you could have to practice on. One is a '60 heavy gauge with a weak rear triangle and bad lungs. The other is a just a heavy early '80s chromoly of some sort. PM me and we can arrange a meet where I can hand them to you.
You are doing something I've wanted to try. Mostly I want to add or modify some braze-ons once in a while. Anyway, happy to contribute cannon fodder.
-Tom