My Roo had a little bubble level on each corner (2 on the front side, 2 on the back side) when I bought it. The interesting thing is that they don't agree! Three will show it level (front to back) and the 4th will show it off. I also have a carpenter's level I used to balance the pop-up that I use. Lay it on the back bumper when leveling side to side & on the floor just inside the door when leveling front to back.
Ann ("Older than springtime, younger than dirt.")
Molly, my rescued cockapoo, who loves camping
2013 Rockwood Roo 21SS
2003 Dodge Durango SXT w/full towing package