• minded to just chuck it away and assume it'll be OK without it.

    Judging by the state of your splines, it hasn't been doing anything for a while. They will get worse, but they're already fucked.

  • the state of your splines

    How much damage is acceptable for an ultralight one? I'm not sure I've ever had one which doesn't get bitten. They're made of cheese.

  • How much damage is acceptable

    If it still works, it's fine, you'll just have a struggle on your hands when you come to changing the cassette.

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