My uncle swore by a weird trick for a sticky shifter and it actually worked
Honestly, I was ready to buy a new cable for my front shifter because it kept sticking in the big ring. My uncle, who's been fixing bikes since the 80s, told me to just drip some light oil, like Tri-Flow, right into the shifter lever itself where the little parts move. I thought he was nuts because everyone says to lube the cable, not the lever. I gave it a shot anyway, just a couple drops while working the lever back and forth. Ngl, after about five minutes of fiddling, it started clicking smooth as butter. I didn't have to replace a thing. Has anyone else tried this on an older Shimano STI lever? I'm curious if it's a common fix or if I just got lucky.