When re-furbishing petrol taps it is quite common to find that the tap body has worn quite badly. I have often had to ream the body out so as to make a hole of consistent diameter for the corks to run in. Do bear this in mind when deciding how to re-furbish your tap.
36 4G, 37 VH, 54 KH(A), 75 Healey 1000/4, 52/53 ex ISDT KHA (project).
Former Machine Registrar & Archivist, General Secretary and Single Spares Organiser (over a 25 year period).
Now Archivist once more - but not Machine Registrar.