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@hippy
Hey @frank9755, could you please remind me of the config you used to get your 40T working?
I've got 36T working with normal chain and long cage Di2 mech, no Wolfie.
Presume you need a longer (118 link?) chain for 40T?
What RD do you have? Did you use Wolftooth?
I gave up hunting for cranks so I'm thinking of building up a custom ultra cassette with 40 or 42T low gear. I'd like to run it without using Wolfie but that might not be possible?