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  • Can anyone tell me how this Specialized steerer expander plug is supposed to work?

    The flange at the top is part of the expanding sheath, and when I expand the plug in the steerer, it then sticks out beyond the edges of the top of the steerer tube, to the extent that a spacer no longer fits over it.

    The instructions show it being installed without any spacer above the stem. It seems like even if I was doing that, the flange would dig into the walls of the stem clamp and prevent the stem being pressed down properly.

    Does anyone have a clue?

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