Originally Posted by
weiwentg
FYI,
some people report that they are using GRX cranksets with various Shimano road front derailleurs. It may not have been necessary to change the FD (although obviously it didn't hurt).
This worked in my case. I wanted to keep my current (Di2 Ultegra) front derailleur, because with Di2, I would be forced to replace both front and rear, which would have been cost-prohibitive.
The other thing is I have a clamp-on front derailleur, which might give more options for adjustment compared to a braze-on mount. I did have to crank the H-limit screw almost all the way for it to work.