Having just shelled out a not insignificant ammount for a new ceramic Semi Integrated headset, it doesn't fit. The top cup is too deep for starters, and the diameter seems too big. I certainly wouldn't fancy pressing the cups in to the carbon head tube. These "standards" drive me mad.

Is anyone running anything other than the FSA ZS-CF that the bike comes with?

Does anyone know which alternative models will actually fit?

Cheers!