https://www.ebay.co.uk/itm/Morgan-2-eared-Metal-spinner-Saver-removal-replacement-socket/114745292744?_trkparms=aid%3D1110006%26algo%3DHOMESPLICE.SIM%26ao%3D1%26asc%3D231610%26meid%3Dfef4c766af9c40de8b5dcc5c50174daf%26pid%3D100036%26rk%3D1%26rkt%3D12%26sd%3D114694033001%26itm%3D114745292744%26pmt%3D0%26noa%3D1%26pg%3D2047675%26algv%3DDefaultOrganicWithV5Tree20Ranker%26brand%3DLotus&_trksid=p2047675.c100036.m2109
This can be machined to suit 3 eared spinners apparently- I dont know if the seller offers it or if you need to get someone else to do it- No doubt as its billet ally, someone on here with the requisite tooling may be able to knock something up, or modify?