[Closed] Whyte t-129 Headset bearings

Can anyone help out as to whether I can just replace the open cage bearings with cartridge ones?

2013 t-129 with an FSA orbit headset, but the bearings are getting on a bit now and I'm having to open it up, clean and regrease nearly every other ride to stop it from feeling awful.

Are the cups used on these headsets the same as the ones that have sealed bearings? If so does anybody know the bearing codes for the ones I need? Some websites seem to say the same ones as cane creek, others say a slightly different size...

Thanks!