Oooooo, quite a bit. That's a 5mm allen key, and the bottom bit is resting against one of the worn bits...
Oh dear.
Was that caused by chain suck or gunk build up on and around the chainring?
Epic chain suck. The transmission was locking up solid up to 20 times a lap, and consistently making a variety of unpleasant noises in the inner ring. Needless to say, I just carried on racing, swearing a lot at my stupid bike.
@Howard started
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Oooooo, quite a bit. That's a 5mm allen key, and the bottom bit is resting against one of the worn bits...