I had quietly checked the floor of the shop for level.... and it was perfectly level.
The mechanics never used a level (and I was out there with them evety minute.
I checked the camper for level when they were through... it was absolutely perfect front to back... side to side and has stayed that way for over a 100 nights travel.... and 16 months with the camper on the truck full time.
I checked the floor, the fridge... I even checked the outside walls all the way around the Truck camper.
I't feels good (and solid) when were are getting in and out of the camper... and when were are moving about day and night.
NOTE: The camera didn't "see" the level like the level did...