• Fit any spacers between the two nuts, then tighten them against each other: it might take a couple of goes to get the preload on the bearings right.

    You have cone spanners, right?

  • Yep, cone spanners I've got.

    The main problem is that the two locknuts are 5mm and 4mm, and I only need 7mm of total material between bearing and dropout on the right-hand side, meaning I'm having to be creative.

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