You tightening the bolts by alternating between each bolt bit by bit up to specified torque rather than fully torquing one then other?
On this occasion I didn't do this. I remember doing 'by the manual' when building the bike and then forgot about it when changing chainring.
@urbs started
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You tightening the bolts by alternating between each bolt bit by bit up to specified torque rather than fully torquing one then other?