Replaced it with a Di2, it is working flawlessly!
Shimano 105 ST5700 Left Lever (2 Speed)
Shimano 105 ST-5800 2 speed brifter cable
Shimano 105 Shimano CS-HG700 105 11-Speed Road Bike Cassette - 11-34T
NT-BP036 Disc Brake Pads compatible with Shimano 105 BR R7070 105 BR RS505 RS305
Shimano 105 FC-R7100 105 double 12-speed chainset; HollowTech II 170 mm 50 / 34T
Shimano 105 FD-R7000 105 11-speed toggle front derailleur, double 28.6/31.8 mm, black, argentée
