See. Keep it simple. That's what I told you (and I guess Rick did too). The tank on the C.G, is really not necessary for Sportsman. Your sequence is so short, the C.G. doesn't reallly change that much since you don't burn very much fuel. It's MORE important to have a reliable engine. Don't worry, the Perry pump will work fine for you when you're ready to try it again. I run them on my 160's without any problems. Once they're set, you're good to go. You do it exactly like I said: find out where the engine runs happily without the pump (I usually do this on a test stand with the tank close to the engine) then put the engine in the plane and set the pump so that the main needle is in the same spot as when the engine was running without the pump. Works every time. For the 160 this is about 1 - 1.5 turns open by the way. YMMV.

John Pavlick
Team Black Magic, Tech-Aero Designs