OP here. We went back to pick up the rig and paused to take a closer look. The manager joined us and we all came to the conclusion that the suspension is now in fine shape and all measurements are within 1/16" and we are very satisfied with that work. Turning to the tires, we re-measured all four tires and the curb-side tires are definitely larger. Both street-side tires were smaller and that included the spare tire which had replaced the worn tire. The spare tire had never been on the ground so it probably was at the correct diameter.
It's very clear to us that the curb-side tires are having a problem and all 4 will be replaced with some brand of LT tire.. I'm also getting very fond of X-chocks, they also made a great measuring device.
Thanks to everyone for all your good insights. You kept my family from harm in what could have been a really bad situation.