Bolio hit the nail on the head. Being a ProBro doesn't necessarily mean you own a flat airplane. It's more of a "Pushing The Envelope" attitude. If you enjoy pushing your plane's limits, your engine's limits, or your own personal limits, then you are already a ProBro who just doesn't know it yet.
Quite a few of the ProBros are former or current speed freaks who have now become hooked on extreme and 3D aerobatics. Since your Flying Machine is an airplane noted for high speed, extreme maneuverability, and extremely violent aerobatics......you already share a common interest among quite a few ProBros......including me.
Thanks for the setup info! And you're right about the 7.5cc pipe. That's the same size I was using too, but had forgotten about it. I'll be waiting to hear if going to a slightly larger prop on the 46AX will improve the performance or not. MA 9.5x6 or 9x7 maybe? You've got me curious.
That's a real bummer to hear about the high G fuel draw problems. Getting rid of the remote needle valve contraption usually cures that completely. Hopefully, the Tettra tank will help.
And just the fact that you're trying to tweak the prop size and the fuel system to get a little better performance already qualifies you as a ProBro......whether you officially sign up or not.