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So I just got my Tiagra 4700 groupset delivered to me a few days ago. I took it to my bike mechanic so he could install it and I wouldn't fuck it up by doing it myself. He handed my the bike this morning and after a couple minutes of riding I began to have problems with the left brifter. There is no ratcheting and no resistance when the big lever moves and the shifter doesn't pull the cable. If I release the cable tension, by undoing the cable clamp bolt on the front derailleur, and give a few clicks with the small B lever, I can then get the big lever to ratchet again (but it doesn't last if I refix the cable). I have already double checked the cable routing and that the cable is correctly inserted in the shifter and all seems to be correct. I took it back to my mechanic and he was just as puzzled as I was, and told me to leave the bike and call him tomorrow. Are the new 4700 tricky to install or did I just get a fucking damaged brifter? I bought it from ribble and won't stop pestering them to pay the return shipping to the fucking UK if it turns out to be defective. I was hoping to do a Gran Fondo later next month, so I guess I'm fucked.
