Cut the header about 7 mm, you get better overall performance. Tighten the springs on the clutch, and use the copper clutch springs. That will let the revs pick up so that the cut on the header won't hurt so much.
I [I]AM [/I]the Driver !
Murnan Modified Motors
Rocket Science Fuels
Auto Racing, Mountain climbing, and Bull fighting are the only true sports, all the rest are just games.