My impact uses a Sullivan rectangular flex tank and I have the adjustment almost there. The powerplant is a Ro-Jett .65 BSRE on pipe. I have plumbed it according to Allen Brickhaus Flying Models article. No problem until the airplane is doing outsides or inverted at which time it slows slightly, enough to feel it be uncomfortable. Please comment on the ajustment of the fuel pickup. Allen also says that the uniflow tube maybe adjusted in and out but doesnt explain the results of that movement. Thanks in advance for your help.
Wayne