Update: Thanks to FBinNY for suggesting the trim issue. Shifting worked crisply in each direction on every sprocket, and the skipping problem only happened on one sprocket, so I hadn't considered that trim could be the cause.
But the skipping stopped after I backed out the rear derailer's barrel adjuster 1/2 turn.
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"c" is not a unit that measures tire width
Last edited by TallRider; 07-27-14 at 09:25 PM.