That has happned to me with a stretched chain or worn teeth, or just tweaking the position of the front mech may help.
maybe one chainring is the wrong way around being off to one side, its only like 1mm or 0.5mm but may be a problem
@Aches started
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That has happned to me with a stretched chain or worn teeth, or just tweaking the position of the front mech may help.
maybe one chainring is the wrong way around being off to one side, its only like 1mm or 0.5mm but may be a problem