Today was pretty productive; I got the cut 'n' turn done and welded back up and I started on some diff protection because I have nothing else to do while I'm waiting for parts.
Here is a picture of the cut after being widened with a grinding wheel. If you look closely you can see the seam has separated a hair (after looking closely at the post I have decided you CAN'T see the separation, but it's there. I promise). You have to be very careful to not cut too deep as the seam between the two pieces of metal is not obvious.
Setting the caster was not too difficult, but turning the knuckle certainly was. Maybe it was because I didn't cut all the way through, but I had to end up using a 6 ft digging spike with the housing clamped in a vise. I got it done, though, and just turned it in small increments. After each turn I set the housing back on a set of jack stands and leveled the perches then used an angle finder to read the caster.
After I had set both sides to six degrees positive caster (this is the number I chose, but I think most people use five degrees) I tacked the knuckles to the housing in four places and then welded everything up tight.
The cut 'n' turn is done, but I am waiting on my axle rebuild kit before I can go any further. Since the front diff cover is now pointing down into the rocks/stumps/anything else that happens to be in my way, and because the housing is empty I decided to weld up some diff protection. I didn't find anything I liked online for a price I wanted to pay, so I picked up a 10 foot piece of #4 (.5 inch) rebar for five bucks and made my own.
I started out just tacking it to the housing and then bending it over until I had some nice protection for the ring gear hump.
After I had my 3 main runs welded in I welded some .125 inch plate between them and ground it all down "smooth" so it will hopefully slide over obstacles rather than just smash into them with my ring gear. This I where I ran out of wire and called it a night. It won't win a beauty contest but it was cheap and will hopefully be affective.