I have a 02 400ex with stage two hot cams, port and polished head, 11:1 Wiesco high compression piston, open air box with k&n filter and i run it with 110 race fuel. Jetted to run with all these mods. Is there anything else i could do that would increase the performance of the bike without going big bore? I mostly do trail riding and some track riding and the dunes when i get the chance.