Electronic & Hydraulic Shifting (Di2, Ui2, customisations)

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grams in reply to @hazzelfrazzel

Have you checked the B screw adjustment? Poor shifting on the small cogs usually means the mech is too far away from the cassette.

(which can also be caused by the chain being too long)

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hippy in reply to @grams

But the issue was not there before the chain was swapped. B-screws don't just undo by themselves. Also the issue is with the big cogs, not the small.

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hazzelfrazzel in reply to @hippy

I'll take the rear derailleur off, inspect and clean everything including jockey wheels on my lunch. If not then I'll see if I can get it in at a local bike shop to check the hanger before my race on saturday

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