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sealed catridges
Yeah, you need to have a cartridge headset and get the right sized and angled cartridge bearings for it, if you're not swapping the headset then easiest to just whack loose balls in, but you'd be best going to a shop and either get them to do it, or at least take the old bearings in and they'll either have cages or loose balls (fnar) they can sell you in the right size.
I got him to order proper, sealed catridges, but that was obviously a mistake.
And now I think he's lost the old lower race so think we need a whole new set.