I just added a 2mm shim on the drivetrain side and it resolved the issue for me. The Magene has a different crankarm shape than Shimano plus a 1mm smaller Q factor makes it tight
Are you using 105 di2 FD? And how long or your crankarm?
I've added 1mm shim to the drive side which didn't seem to fix anything. I played around with the app and am able to make it "just" work. But it's really really tight.
It on the very limit to rub on the outer plate of the front derailleur, but if I move the limit screw it will hit the crank. Therefore I don't really see how adding more shims fixes this problem?
