Well, I tried three things:
1: I tightened up the clutch cable, and noticed less buzz while riding, (got to have realistic conditions, and the other motorists were no doubt wondering what was wrong with me as I raced around in 2nd gear,)
2: I tried LOOSENING the cable. This didn't do much but make the buzz return.
I got to thinking some more about it, and figured since the motor isn't running any different, and the only thing that has really changed over the last 1600 miles are things loosening and getting happy in their homes, plus, I noticed it coming from my left hand area, AND I agree completely with you as to the source of most of this buzz, I realized it HAD to be the cable assembly.
So I tightened it up, leaving the required slack recommended in the manual, and then I bloody SHIMMED the area where the cable guide meets the adjusting knob/housing.
Yep, I shimmed it.
How?
I sliced up three little pieces of aluminum can, each about 3mmX4mm, and I wiggled the cable guide and inserted them one by one, after I had adjusted the cable exactly where I wanted it.
I pushed the shims in place with the darn key, (looooooow tech,) and went down the road.
No more buzz.
There is still the telltale "I'm hitting the powerband!" sound, but no annoying buzz to distract you from your pleasurable riding experience.
No pics, use your imagination.
If your cable guide begins buzzing again, go agead and shim the sumbitch. It turns out that a Sprite can is just the right thickness all around.
