No one carries the DogBoy
Join Date: Feb 2004
Location: Upper Midwest USA
Posts: 2,320
Bikes: Roubaix Expert Di2, Jamis Renegade, Surly Disc Trucker, Cervelo P2, CoMotion Tandem
Mentioned: 1 Post(s)
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I agree. I have park tool cutters and use a punch to open up the routing. I have used sandpaper to smooth a sharp edge on occasion, but that happens more on brake cables in my experience. OP, if it were my bike, I'd first check that the hanger isn't bent. Then I'd check cable friction through the housing, double checking anything that compresses the housing (like a zip-tie) to be sure they aren't too tight. If that didn't get me what I needed, I'd run new cable/housings.