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Coppah has developed a nasty vibration and I've got to have it looked at. Where should I go, who should I see?
Mark B. (TLRman) has done a throttle sync and a timing retard adjustment (Mark, did I remember that right?). The sync helped a bit, but the problem is getting worse.
It's a straightforward pounding through the bars that's directly dependent upon engine rpm. There used to be a "sweet spot" at around 4,000 rpm, but even that's gone now.
My guess is valves out of adjustment, but what else would cause the cylinders to fire with different levels of force? Am I missing something simple, or do I take it to a pro?
Lemme know!