Stiff link in the chain? Might be doing something weird Does it do the same thing if you run it on the freewheel side?
Yeah stiff link is a good shout too but as there's a quick link in the chain I thought it was unlikely.
Still worth checking.
@Ndeipi started
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Stiff link in the chain? Might be doing something weird
Does it do the same thing if you run it on the freewheel side?