you need spacers to make up any 'space' between the top cap and the stem... it's Sheldon time....: http://www.sheldonbrown.com/gloss_ha-i.html#headset
@Dangeruss started
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you need spacers to make up any 'space' between the top cap and the stem... it's Sheldon time....: http://www.sheldonbrown.com/gloss_ha-i.html#headset