Got the grx front derailleur, extracted the junction box out the down tube and plugged it in and all seems to work with the 817 RD. But in the etube app it won't let me configure synchro (can enable it manually) is this because Shimano soft blocking using the 1x specific RD with a front mech?
Got the grx front derailleur, extracted the junction box out the down tube and plugged it in and all seems to work with the 817 RD. But in the etube app it won't let me configure synchro (can enable it manually) is this because Shimano soft blocking using the 1x specific RD with a front mech?