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Old 12-08-14, 03:39 PM
  #23  
gsa103
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I'm going to offer a weird suggestion.

Have you looked at the hub for any marks? Cogs can sometimes dig into the hub body, if you install a new cassette it won't match the hub shell gouges and you can get a little tweak when you put the cog under load. The original cassette will match the hub shell for wear.
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