Michael,
I can't ad much, but I remember when I posted either here or at the old trucks yahoo groups in May when I had bought the wheels from Kroft trailer, I got a e-mail from sombody who bought the same wheels and was putting clips on them. I have looked for that post but have not found it, so it may have been a private e-mail to me. I do remember that hed had to put a washer between the clip and the wheel?? to get them to work, and the he used stainless bolts with nylock nuts. I don't remember the details, but you might want to post over at the old truck group and see if someone responds.
Dave