Joined: Aug 2009
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From: Minneapolis
Bikes: 2022 Salsa Beargrease Carbon Deore 11, 2020 Salsa Warbird GRX 600, 2020 Canyon Ultimate CF SLX disc 9.0 Di2, 2020 Catrike Eola, 2016 Masi cxgr, 2011, Felt F3 Ltd, 2010 Trek 2.1, 2009 KHS Flite 220
The answer totally depends on how much chain stretch you allowed before you changed the chain. If you kept the chain on too long, the wear on the cassette was greater and the misfit to the new unstretched chain will be greater.