• My STI and cables are around 6 months old, around 500 miles.

    I can change up the rear cassette, (i.e larger cogs) but going down to the smaller ones is rubbish. They dont go down one at a time and I can change and then after a few pedals it then changes.

    I have turned the cable adjuster clockwise and its as tight as it can go.

    Other than a new cable, what am I doing wrong?

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