i have already replaced all the o-rings, i have got help from a real good racer who knows alot. it just about trial and error. the plugs are the same as the OS P7 and the P7 is the same as the kyosho/Team Orion plug. i think it might be the gasket, and fuel line as well as the tune on the low end, thanks for your help ill let u know how it goes

Mitchell