• How much we talking? I filed the crown of a fork down once carefully, really didn’t take much. Just do it. Otherwise there’s a crown reaming tool somewhere at work but. Just file it down very carefully!

  • 0.6mm according to Sheldon Brown. Going to give this headset a punt first. Don't feel confident with filing down the steerer, reckon I'd get it ovalised in some way & that'd screw up the headset's smoothness. If I had a more precise set of callipers I'd be tempted to try, but mine are just cheapo ones.

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