• Well, sort of made it work - in principle.
    Added a c.2mm wide spacer between the last cog and the locknut. It's finished black so could do with a silver one, and slightly wider (it's a Shimano fitting that the LBS had foc) so I can put it over the hub, behind the first cog.
    Is this a safe / reasonably sensible thing to do? Everything indexing properly and appears aligned...

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