Poor shifting in 8/9/10 - Solved!

In article
<[email hidden]>,

D'ohBoy said:

So I had been tolerating some moderate noise from the #'s 8/9/10 cogs
in the back as I rarely get in them and when I do, I am usually riding
too hard to notice.

But last night it really started to bother me. For some reason, I
thought of the donuts I put on my shift cables along the down tube.
Tipped the bike up and AYUP! The bottom donut on the rear shift cable
was up against the bb shell. So as I fed cable to the shifter by
shifting to a higher gear, the donut would bind the cable - binding
more and more as the cable pulled it tighter to the bb shell. Rubber
donuts do not a good cable guide make!

And I thought I had a chain line problem.

Bizarre bicycle malfunctions. One of the perquisites here.

Dang! My shoe lace is ticking on the crank again.

--
Michael Press