Hi Mike,
I had my coach weighed by the same group. Although I do not have a tag, my drivers rear is 350 pounds over the axle rating. There is not much I can do about it. There is a slide out and radiator above it. My confidence is Rockwell axles have a certain amount of redundancy built in.
If you wanted to recheck the tag, hit your local truck stop weight scales and just leave the tag on the scale and you'll get the combined weight to validate your results from the escapees.
Christmas Blessings, Fred