what part should i go with next? my banshee has 28mm keihin pwk's,pro design cool head 21cc dome's, .040 weisco pro lite pistons, weisco crank, +10/-10 timming plate on +4 timming,stock intake, no porting, toomey t-6's, 13/41 sprockets with 20 inch tires. im really just trying beat my buddy and he has Pro Design Cool Head 21 cc domes,.040 weisco piston,Full Race port on the cylinders,FMF pipes ,Trinity adjustable timing plate,kehien 38mm carb,trinity stage 4 1-2 intake ,vforce reeds, 12/41 gearing with 22 inch tires. he slowly pulls on me untill 4th gear then 5th and 6th he pulls hard on me.