Originally Posted by
prj71
What I'm saying is that cable housing that is too short can kink and bind the cable creating even more friction/resistance vs. just the resistance of the derailleur spring. A tight loop where the cable enters the derailleur is more likely to cause the issues that some of you speak of.
Wrong. No tight loops or excessive housing on either of my bikes that has this issue with the STI shifters.
cxwrench has been a bike mechanic for at least 3 decades. I think he knows what he's talking about.