• Having trouble with a new SRAM Force rear mech. Was fitted by shop and all shifts are nice and smooth but it won't stay in the largest cog/smallest gear. Same issue in either the large or small ring on the front. It's not an issue with the limiting screw; even letting the screw out so that the mech just brushes the spokes when the lever is fully pushed in, when you release the lever the mech returns one position back onto the second cog.

    Any ideas? I'm sure the shop would sort it since they fitted it but if I'm missing something obvious I'd like to think my limited mechanical skills should be able to sort it.

    Cheers.

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