Thanks to all of you for all your great ideas. What it took for the nut to finally come of was....... I drilled a hole on each side of the nut, traveling parallel with the pinion threads, then I used a slightly larger drill bit to get closer to the threads and outside of the nut. I then used a Dremel with a router type bit that got me all the way to the threads, then I whacked it with a hammer and chisel and the nut split. Took her the rest of the way off to see that there was all kinds of rust. Guess them mud trips and water runs took their toll eh? Whelp, pulled the yoke off and seal to see that the seal was torn by sand and crud. Anyways, I want to thank everyone who replied and helped me with this. Keep Blazin!!