Originally Posted by
zacster
No, cable tension is fine. It is the shifter that isn't catching. If I pull at the cable it shifts. And it shifts from small to middle no problem. When I took the cover off I could see what was happening, I just couldn't figure out how to fix it, but the lube was thick and sticky so that is likely it. And just by looking at it I could make it work but not consistently.
Even better, gunked up Shimano Shifter Lube is a thing. Flush it out, add some fresh lube, and GTG.