Hi Carbon.
I'm not certain what chain length I'm running in that picture, I will check and confirm what I was running for you as soon as possible, but its likely you will have to wait until the weekend due to other commitments
the setup has changed since that picture as I'm now running a Q-rotor setup, spin unobtainium billet cassette and a different chain.
Thanks for that, no rush, just keen to see what other Di2 users are running, like I said genuine real world Di2 advice is a bit thin on the ground at the moment.. Let me know when you get time, Cheers.