Thanks windcosmic. I'm glad it's a strong one. I heard back from Sahak, the proprietor of Rossi USA, and it looks like the Rossi header will work fine. I might need to try different o-rings until I get the best fit.

I've started using [link=http://www.powermasterfuels.com/products/GMA.html]Powermaster GMA Stunt fuel[/link] in all my engines lately. I run a lot of old engines and European engines and they really like this blend. It's 5% nitro, 22% oil, 50/50 castor/synth. And, it comes in a metal can! My new OS AX .55 runs great on it, too, with a very low idle and excellent transition. Plus, I get a nice smoke trail that helps me practice maneuvers.

David