Charles, I don't have extras to sell. I sold stock to Niemoeller and Karasch. Niemoeller has cheaper shipping to the US. I would e-mail Sven Jacob s.jacob@niemoeller.de and ask. I would be surprised if they sold them all, already. They will definitely be over $ 100 ea. Yes you may have to drill out the set screw which I believe is 5 mm. My routine is to drill and tap for a new set screw in different location when reassembling.