Dana 60 death wobble & misery|General 4x4 Discussion|Forum|Gold Hills Posse 4x4

Hi all:

The K5's Dana 60 has the death wobble. When the shop originally installed it, the wobble was terrible because the shop apparently didn't tighten the Allen wrench bolt on top of the nylon kingpin bushing at all. I "fixed" this before by tightening the Allen wrench bolt on top (see photo). I just tightened it to the "good n tight" standard, nothing crazy at all. I did not torque the shit out of it. Before tightening it, I did take it apart and visually looked at the nylon bushing. I added plenty of grease. It was fine.

Problem fixed for many miles, until I just had the tires rotated. Now the death wobble is pretty violent and frankly dangerous. I definitely wouldn't let anyone else drive it until I get this worked out.

So today I got out the tools to take care of this. Got out my trusty harbor freight 1/2-In socket wrench & the correct allen wrench fitting, The Allen wrench fitting was for a 3/8 in socket, so I used an adapter to fit the 3/8 Allen socket fitting  onto the 1/2 inch socket wrench.

Now I'm nothing special, but I yanked on it as hard as I could. One direction, then the other direction. Couldn't budge it. Finally extended the 1/2-in socket wrench all the way, uttered a few magic curse words, and gave it all I had. It snapped the adapter clean off. See photo. 

Before I gave up in disgust, I did try to turn the large 1 inch bolt that the Allen wrench bolt is seated within. I couldn't budge it either. 

Conclusion: a pro shop can easily handle this with whatever aiir wrench or accessories. 

Is my conclusion wrong? Am I missing anything? Any and all advice is appreciated. Thanks!