Turns out you need to start with it piss, not straight and once it's bolted to the braze on, then you use that stopper screw to push the arse end straight.
I did. My Di2 was never this much of a dickhead and that got a fair bit of tweaking done to it with different ring sizes. Maybe I just got lucky with it. Did they shrink the cage width or something?
Don't think so. Two main shifter positions and two trim settings. Same as standard Shimano double shifters. Cable tension is key as usual, which means you need to be in the right ballpark before setting the cable tension on the FD.
Yep, same as a Di2 mech. RTFM.