I fail to see what is so hard about setting up to run in the fuel class. My 600 made some of its fastest runs on 87 octane pump gass. I chose to run that at the time because I set the bike up for it. I also ran MR-9, Rocket fuel and alcohol that season. Good notes, multiple fuel and ignition maps and a few other changes and we were good. Event gas at that time was rocket fuel. I don't see the big deal. No matter what you run in the fuel class, if you go up against the NOS bottle you loose.