If the nut is bottoming out and not tightening the tie rod in the tapered end, you will need a washer/spacer under the nut. If you can't locate an oem washer/spacer, you may get by with a grade 8 washer. Be sure you get one with a large enough hole to fit down over at least the top 1/2 of the taper on the tie rod end. The washer will go between the top of the tapered part and the bottom side of the nut. Gene