I think my time has come...I need to clean the carbs - Boohoo, right?
I went for a good run today, and experienced something I got a hint of while crossing the Bay Bridge (scary enough as it is) - running at about 60mph at a steady pace, I feel at least one cylinder begin to cut out just slightly. If I give it extra throttle, the missing cylinder comes back. I'm only getting the problem at 50-60+, with a steady throttle (think cruise control). I had plenty of good (Chevron, IMO) gas, lowest grade, and a few cap fulls of sea foam in every tank. My riding behavior has changed since I've moved out of San Francisco; I ride at higher speeds more frequently, and am starting to notice the problem. Should I be thinking carburetors? timing (Dyna S)? fuel flow to the carbs? coils (80's CB??? ~3.4ohms)? The carburetors haven't been fully cleaned in over a year; although I do ride year round, at least every week or two, but usually much more often (daily).