I forgot to mention that I also installed new 1" torsion bars. I just came back in from adjusting the torsion bars, and it seems to have cured most of it. I thought that the torsion bars would only affect the front end, but it made a difference in the rear as well.

Thanks to everyone for their help!

I'm going to let it sit a few days and see if it settles. Then I will adjust it again. Afer a week or so, then I plan to take it in and get an alignment.