I got in to it a couple of weeks ago and found the pin in the inner nut had sheered off. Replaced it with a 3/32 roll pin. When I took it apart today, the pin was still there, but i discovered the washer that holds the pin had started to clime on the treads of the spindle. The threads were a little "wallerd" out to. So I decided to take the nut from my old automatic hubs that came on the truck, and modify it. The manual Warn hub it too small in diameter to fit over the auto-hub nut. Took the bench grinder to it and ground the flange on the back of the nut down. It's still 6 sided- sorta. Pulled the roll pin out of the inner wheel bearing nut, put it on, tightened the modified auto-hub nut against it, and put the little key in that holds the auto-hub nut from spinning loose. Wheel is on and I'm about go drive it. I will yank it apart and check it when I get back.