Had the rear end worked on last Friday. My mechanic did not want to work on it and he referred me to the most expensive shop in Orange County, Waited until I found a good mechanic through referrals.
When I shifted the car from forward to reverse and back as directed above, the rear axle would shift. We replaced the links, bushings, top differential bushings, subframe mounts, and shocks.
I can't believe the difference. The rear end is as tight as the day the car left the showroom. Now I am saving my pennies to R&R the front end.