I assume you've had this in a stand and had a look at the offending sprocket while turning the pedals over? Only clicks when riding?
I don't have a workstand. I'm going to stick it on the turbo later and see if it happens again then see if I can spot where the cog/chain seems closer to the neighbouring one. Then I'll hit it with a hammer.
@hippy started
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I assume you've had this in a stand and had a look at the offending sprocket while turning the pedals over?
Only clicks when riding?