I just rebuilt a 750sx small pin motor, new crank, forged pistons, 25cc head, the intake ports have been raised 2mm, exhaust ports widened to 59mm. Dual 46mm carbs, west coast 46mm intake, boysen reeds, boysen reed stuffers, aluminum flywheel, MSD ignition enhancer. Factory B pipe, and exhaust manifold, aftermarket water box. The SBN carbs came with 150 main, 120 pilot, with 12 lbs of pop off pressure. I have no top end! The bottom seems good, but just drops off when I grab the throttle. Anybody have a similar set up? Any jetting suggestions? Or timing suggestions? Anything will help!