Joined: Oct 2015
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From: PDX
Bikes: Merz x 5 + Specialized Merz Allez x 2, Strawberry/Newlands/DiNucci/Ti x3, Gordon, Fuso/Moulton x2, Bornstein, Paisley,1958-74 Paramounts x3, 3rensho, 74 Moto TC, 73-78 Raleigh Pro's x5, Marinoni x2, 1960 Cinelli SC, 1980 Bianchi SC, PX-10 X 2
2nd the had it, matching cup looks the same from here, at any rate the whole thing is suspect.
I would measure the crown race seat and get a proper complete HS in good condition since it looks like you have brought the rest of the bike up to a good state.
It will likely be easier said than done as you have found out, finding another complete may be easier, maybe even settle for a UO8 for the time being although they don't turn up cheap when you need them to.
That bottom cup looks like its not seated either, might want to have the facing checked as well.