Well, the problem is solved. Whew. I put new tires on it Saturday. As much as everyone hates them, I went with the same tires I had on it, the BFG AT TA/KO, 315/70/17D. I couldn't keep myself from it
I love 'em (had 7 sets over the years). Then this morning, I had it in the alignment shop and they tweaked the caster for me; 4 positive on the left, 3.9 on the right and aligned the front end which WAS slightly out. All steering and suspension parts tightened and torqued the way they should be and the problem is now 100% solved. No more wobble, no shimmy, no anything. I know that good tires which are balanced; and an aligned front end are important but man, I was blown away by how BAD it got (and fast) when the tires reached the end of their wear life and the front end only a little out.
Now I know. You win some, you learn some...right? Thanks to every one who listened and my heartfelt apologies to Pro-Comp; I am going to replace the shocks in the stabilizer but there's nothing wrong with the stabilizer. Thanks y'all.
Priscilla