This afternoon I removed the distributor and plug wires, reset the engine to TDC, reinstalled the dist and wires...no improvement. Put my timing gun lead on all plug wires and verified they were all firing.
I then adjusted/closed the carb idle screws on all four corners and it seemed to reduce the vibration...maybe 30%. I noticed #1 plug was fouled again when I was setting TDC, so I'll replace them all and continue to tune the carb. Also, I shot the header tubes with the infrared gun after adjusting the carb and the temps were much closer to each other.
Lastly, I removed the counterweight on the flywheel and weighed it. Mine weighs 161 grams and the PRW tech I spoke to yesterday said it should weigh 156.1 grams. He said more than a couple grams could effect the balance. I know 5 grams isn't much (weight of a quarter), but I'm hoping with it being so far from the crank centerline, it's causing the vibration. Fingers crossed. I'm going to have him send me another...with the correct weight.
Daniel
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