3 Comments

  1. High limit screw not set correctly and your mech isnt properly indexed.

    Tighten the screw on the mech with a ‘H’ next to it until the closer jockey wheel on the mech lines up with the cassette.

    Do the same on the smallest cog with the ‘L’ screw.

  2. Did you recently replace your chain or take your masterlink out of your chain and put it back in?

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