I have an older set of them and the only thing that bothered me was the actual machining of the locknuts was just plain wrong. Instead of the nut screwing on straight, they had drilled and tapped
some of them crooked, So the nut was not true and flat when you screwed it down so it couldn't hold the ball stud correctly in place.
Easy fix though, just replace the nuts with decent ones, they were metric though so it was hard to find the large thin ones.