• Febrile is talking about the opposite of the problem you have: when the stem is too big for the bars.

    Not sure I'd be happy messing with the stem: it would be difficult to keep it perfectly round, which could lead to stress points and possibly failure!

    26.4mm stems are plentiful, but of course you'd have to look harder and pay more for one with a Concorde logo.

    I'm not a fan of "pantographing" though, so that wouldn't bother me.

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