[Closed] Zesty 914 headset question

Hi all, I am in the middle of building a Zesty 914 up.
Does anyone or has anyone own and replaced its headset?

Says on spec its came with headset PT F11 Tapered 1 1/8-1.5''

So i went out and bought a Tapered Integral hope headset, T
op cup fits perfectly, the bottom however looks to be a little tight, maybe a 1 or 2mm tight. Not much. The cup says ZS56/40 on it.

As its a carbon frame i dont want to do my usual and go at it with a piece of wood and mallet and "make it fit".

Am i using the correct bottom cup or have i purchase the incorrect one?

Thanks in advance.