I was thinking of that actually, brushing a bit of laquar on - but the nuts have sharp edges - will see if they contact the faces of the collars
The best remedy so far has been clean them, and put my favourite Vaseline on them. Looks a mess when it's on, but take it off on good days and all is well

Can't have std rims on now with the stud conversion, without a bit of work. Would like another set of comps perhaps, the guy who i got these from had a barn full of them and these were cheap. See if he has some cheap and nasties when i have some money