You say that but this is someone's bike who's FD was working and then wasn't working. I can only assume something was loose from the shop and it loosened off further during a ride.
I thought I had it and then trying to take the tiiiiiny rub out of it and argh fuck it's too far out again.
The beauty of 8000 and 9100 is never having to adjust the FD once set up properly. And you take the slack out of the cable