Plaet X Exocet 2 Headset

When replacing the sealed headset bearing on my exocet 2 I noticed rust between the pressed in intergrated cup and the frame. I checked with a magnet and the cup is steel. Has anyone tried to replace this cup. I am worried that it is glued in and there is not much of the cup is exposed if I try to press it out (ie the frame also has a 45 deg cup).

Cheers!
Gareth