If you scramble your eggs, it doesn't make any difference how level the trailer is, LOL. I have to agree, if you get the floor level, the trailer will be mostly level and you won't screw up the fridge. Best thing to do is to park the trailer on a place as level as possible, check the level side to side and adjust with wood or the little plastic squares to get it level side to side. Then, unhook the trailer from the TV and level front to back, again probably on the floor of the trailer. Once you are there, you can put your levels on the hitch. Now that I have said that, I basically used the counter next to the fridge to do the leveling and, it's pretty close. Certainly close enough to not hurt fridge.