Those stick on levels can move, and if the person who installed them didn't have the unit level when put on you may be tring to relevel something that was already level. As suggested, get a bigger level and check numerous places inside. The Fridge is the main thing, it needs to be relativly level for extended operation, tho the newer aren't as fussy as the older units. Do you plan to keep the unit on the present site? If so you might wish to block it up as I'm sure there are others in the park that never move. Good luck
2011 Chevy Silverado 3500HD Ext Cab LT DRW Duramax/Allison pulling a 2012 SOB (still Thor, but not a Keystone), Dual ACs, 4 Door Fridge, Fireplace, Sleep Number Bed, Level-Up Auto Levelers, Disc Brakes, Winegard DirecTV SlimLine Auto Dish, Onan 5.5K, Splendide Combo Washer/Dryer, GY G114s on HiSpec 17.5 wheels, TrailAir Tri-Glide Pin Box, Mor/ryde IS.
Michelle & Ann Sullivan and 4 American Shorthairs