Yeah, the only reason I'm still tripping over the k/q is that no one ever takes me up on that offer

. It may become the base for a solo/cafe seat someday.
If you are close to Charlotte you are welcome to use my gear to weld up your seat pan. Another (little bit hillbilly) idea would be to cut out the rust and rivet a metal patch in and/or use panel adhesive or epoxy. All you'd need for that repair would be hand tools, and provided you make a good overlap it should be strong. SEM makes a good panel adhesive:
[youtube=425,350]http://www.youtube.com/watch?v=yZc7qvwPycE[/youtube]