Old 02-06-12, 11:54 AM
  #7  
Bill Kapaun
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Join Date: Feb 2007
Location: Mid Willamette Valley, Orygun
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Bikes: 86 RockHopper,2008 Specialized Globe. Both upgraded to 9 speeds.

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Did you disassemble this cassette down to the loose cogs & spacers?
IF you did, I'd check for-
Debris caught between cogs & spacers
or
The spacers have some 'extrusions" on them from being compressed and not allowing the cogs to fit quite as closely together as they should.
This would have a cumulative effect, with each progressively smaller cog getting further out of place.
IF so, take a file and knock of the high spots.

I'd also look for a loose lock ring.
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