When the compression is too high in cars they have to run higher octane fuel to stop early detonation so maybe you could buy high octane fuel and add some octane booster to it to get rid of the early ignition. I'm just throwing it out there I'm not really sure if that would work. heres the pictures of the carb on my 42cc poulan. It made throttle linkage a bit of a nightmare but its kinda neat.. anybody else have this setup?