I know it is a little over done for you Fretters and I didn't have any left over red paint
The original handle had threaded balls on it. I found some at Mcmaster Carr and had to retap one and drill and tap the other. I found a 5/8 drill bit would dish it out for the ball to fit snug.
Cheers.

Been trying to decide what method to go with for some of these handles. Tap and thread would probably be easiest.
The other thing I didn't mention was about the grease on it when I took it apart. In the first set of pictures you see the swivel base bolt stuck to the side of the base. All the grease was like sticky glue which caused the moving parts inside not to move freely. It was as bad as black dried up and caked on grease to get off.
Grease can be horrid stuff after a few years, can't it. I put some old Shell grease in some plastic tubs as the old containers had rusted somewhat, and the amount of oil which has parted from the grease and is pooled in the bottom is a fair amount, so it goes to show what happens to it in use.
Still trying to decide what method to go with for lubrication on the vice slides, because of that. I used to used the Copper-Slip type stuff, on both the leadscrew and slide, but that stuff does the same over time, so the last couple of vises have had the leadscrew lathered with grease but I've only oiled the slides on reassembly, as coupled with greases ability to cling onto any dust, filings and swarf like there's no tomorrow means I'm becoming more disinclined of using it at all where it isn't well covered.
Btw, is that a stop on the end side of the slide, to stop it being pulled out too far? If so, is that an original item or something you add?