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>bought bike from friend last year
>got it for good price
>needed rear derailleur hanger + derailleur
>buy parts
>install
>works perfectly for months on end
>be out for a cycle yesterday , shift up into biggest cog and hear a lot of grinding noises
>derailleur is pushing chain into rear cogs
>check b tension screw
>it has dug into the hangar slightly
>nowhere for b tension screw to sit on hangar
Do i need to find another derailleur hanger? it did say it was for my bike but it seemed to be missing the little tab that the screw sits against