Good one Gav. 
im going to use both methods. since this is my first restoration i have to experiment a bit. besides im sure i cant possibly polish these parts by hand.
ps: i didnt ever think id go to this much trouble to clean up a working machine. but its hard to stop when you want to be proud of the end result.
I wouldn't be taking those parts off and polishing them at all... some things on an EM are best left alone and the Jones plugs are one of them. If they have lost some tension then the female side can be tightened by squeezing them together individually. A very fine Dremil stone quickly put down the inside will take any tarnish off.. but I mean QUICK! In and out and then gone!
Clean the outsides with an old tooth brush and Brasso if you want them shiny.
Go taking them off and you will end up in all sorts of problem.. they are held in place by spring tension. Getting them back together is a pain!
