waagbuck,
I had a similar problem on my BUSA Nieuport 28. I used a torch on the cabanes, but they had a jig set up for that and I wasn't too worried about burning it up. The interplane struts had to be soldered in place. I ended up using a piece of thin gasketing material I got from work instead of paper to protect the frame. I also used a soldering iron instead of a torch. Yes, it took FOREVER to heat up enough, but in the end I got a very good job out of it. Just go slow and take your time. Good luck and give me a call if you need some more help.

papermache