• I have that combo with cheaper chain and it's generally fine.

    Had an issue few weeks back where the bike was CAKED in mud and shite and did a double shift after corner before a climb. It didn't shift quick enough and I thought I'd thrown the chain or something but it hadn't just sounded dodgy.

    Have you followed the proper steps for adjusting the Di2 FD? They're not like cable FDs

  • yep, followed all the videos online, and it always shifts perfectly on the stand, but is then v slow - often 2 whole cycles of the cranks needed with finger on the shifter for the chain to jump when pedalling v softly

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