Ok, so I have bought all the stuff to rebuild the regulator 100%, since doing that it has made a BIG differance now, it will actully run now. I ran a tank thru it the other day at low, med, and high throttle and no troulbes of sputtering, or leaning out onec i got the regulator set. So now my big question is what should i be looking for on RPM range? High and low? Ive got an 16x8 wood zinger prop on it now, mwhat kind of rpms should I be looking for? Thanks guys.