How technically inclined are you? I posted the file on printables and put the link in one of my comments. You can have them printed and do everything yourself. I may be able to make a set for you if I have enough time if you’re not interested in diy

Just released the file I designed here:

https://www.printables.com/model/658153-koss-kph40-mmcx-adapter

Enjoy

Which ones did you get?