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@TotalShanner
so with the bike in the stand, in big ring and 11t cog, when i pedal backwards the chain lifts slightly up on to the 12t sprocket. its more pronounced when in the granny ring and 11t.
I have a good few cannondale spacers left over so will try move the cranks around. Googling has brought up a few threads on weight weenies all saying theres some chain line issues with hollowgram but cant find anything with this specific problem.