Originally Posted by
Bob Dopolina
Now the liners are so scored that the drag will only increase. It's time for new housing and possible cables.
Unless it's lubed cable issue, again wd40 washes out lube and moisture, the original stuff is not a lube. Messy. Have to take everything apart to do it right. Best long term easy fix is really good stainless cable and housings. Do it yourself with the right tools. Caveat - I have no idea what "really good stainless cable and housings" are, just what I've read here on BF.
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Disclaimer: 99% of what I know about cycling I learned on BF. That would make, ummm, 1% experience. And a lot of posts.