I have just finished rebuilding the drive shafts with one new and three rebuilt CV joints ( destroyed one learning how to put it back together! ), and now realise the ends that go into the hubs are different threads.

One is right handed and has a green marking on the nut

One is lefthanded and has a white marking on the nut.

Which one goes on the drivers side ?

Conventional thread goes on driver's side.

Liam

Check you've got them on the right shaft as they are different lengths.