Hi! I have these Ultegra 6700 shifters and a Deore 9 speed rear derailleur. They work fine, but they "lose adjustment" pretty easily. I'm thinking about upgrade into this Shimano GRX RD-RX400 (
Shimano Ultegra (6700-G SS) derailleur
Shimano ULTEGRA Road FD-6700 Front Derailleur, 銀 | Bikeinn