Another Update: I think I finally found my problem. Had things apart again yesterday to swap in control arms to see if I had a ply bushing failure. Discovered that the left front interior CV is shot. It allows excessive movement in and out. I can move the brake disc in and out about an inch! Put the wheel back on and, of course, movement at the tire is even worse. Checked it against the right front. Right front doesn't move. Makes sense. It's part of the drive line and the problem is worse under load and when turning. Ordered a new axle assembly. Will update after I get it installed. Fingers crossed.