MY TRUCK IS LEVEL. That's right I can't believe it. WOW.
I took the advice given in above posts, and from others who were concerned about my well being. Pulled the axle completely out from under the truck, so I could put all kinds of forces on the arms to level them as I tightened by hand. Tightening by hand wasn't too bad for the 2 tries that I did it. Well after 2 times loosening and tightening, I was finished. I am not going to touch the C bushings any more. It is not because I got them level though. Oh no. They are exactly 3/4" apart. The passenger arm sits 3/4" above the floor, while the drivers side arm is just touching. Not level. Exactly the same result as the first 15 attempts. I am sure tht it is not possible to get my arms to sit any other way. I was pissed and gave up.
So I reattached the axle to my Bronco, and said I am going to have to live with the lean. This was not true though. While re-assembling, I was making a big effort to measure correctly to get the axle centered. Ended up adjusting the trac bar quite a bit from where it was before. Took it for a long drive today, and noticed it stayed between the trees, even at 55mph. Felt much more comfortable, and safe to drive. No more wondering which way it will go when I hit the next depression in the road. Felt good.
Just got home, and did a quick measure from ground to frame. Checked out level. Couldn't believe it, so carefully measured it again, and YES it is level.
So I am now a member of the C bushing hocus pocus club.
I also found that my trac bar was very hard to move (binding). Removed, cleaned and retorqued. I am sure it helped.
With this good luck, I expect something new to start leaking tomorrow.
My wife and I got the night off from kids, and took it on our hot date. I might treat her to a mud festival for being so nice to me today. My Bronco that is.
I am not going to look at all that time messing with the arms as wasted. It was time well spent with my Bronco.
Thanks for all the help and encouragement.