Hey Andrew. The bike cost me less than $100 complete, and needed a bunch of other work anyway. While it's a somewhat rare marque, it's not the best specimen. Translation: down and dirty is all I'm prepared to do.
calstar: I am planning to do exactly that. Here's some pics of how far I got today. Need to finish cutting the new tube to size, and get an appropriate piece to use as an internal sleeve/plug.