I am thinking it is the caster. Up until I switched the tie rod from the hi steer arm down to the normal tie rod location I didnt have any death wobble. the normal tie rod location is at a slightly different angle than the hi steer arm was.

At this point I only had wobble once, and it wasnt that bad and it was able to recover itself.

After this I switched up my springs and moved my axle further forward. (By this I mean I am running isuzu springs SOA with a shackle in the rear. I started with the long end towards the front (25 inches to the front spring hanger), then I switched it to the short end heading to the front spring hanger.) Because I shortened the length of the springs to the front and my spring hanger is considerably higher than my shackle it changed my caster. Quite a bit in fact. Enough that I can notice that my steering knucle is not parallel with the ground.

Here are the solutions that I see so far. I can move the spring hanger further down and make myself some bigger fangs but at the same time make my spring eyes closer to level while at the same time lifting myself some as well.

Or I can cut and rotate the knucles even further to correct the caster.