My 1990 RC30 has always had a real flat spot at 6>7,000 RPM, (we're at 5,000 feet here on Colorado) so I got it dyno'd to sort the mixture out. The baseline run showed it to be running really rich all over (see chart), the jetting was pilot 38, main 112 front, 110 rear, screw 2.5 turns. The dyno tec...