Ive done all the tuning i can stand with this engine.at full throttle pinch the line and the rpms go up a few hundred rpm and on the low end the rpm goes up a little then dies.the tank has been lowered enough and i have no leaks.I'm running 10% cool power and tomorrow i will try 15% omega and some different plugs and i will rotate the engine a few degrees to help prevent pooling.if all this doesn't work I'm going to play soccer with it.