Originally Posted by Casita Greg
FWIW, the fridge isn't all that sensitive to being "absolute level" as some might have been led to believe. If you don't roll out of bed onto the floor, your close enough. Actually, even within several degrees of level, the fridge will function just fine. It's not necessary to be "balls-on" dead set level for it to work like it should.
This is absolutely correct. The fridge does not need to be perfectly level.
I've never had a trailer where every horizontal surface agreed to what level was, so pick a spot you want to use as a reference, and go with that. It might be the counter top, the bed, or the shower floor, for instance.
Once you decide and set your trailer to that point, glue a level onto the tongue where you can easily see it, or a lev-o-gauge onto the front of the body so you can see it from the tow vehicle. If you glue a two way level onto the tongue, us silicone, or some viscous glue, so you can "adjust" it to match the surface you selected as the reference point. Then, it will cure in that position, even if the tongue doesn't match.
I selected the bed frame, and the countertop, as the two best points to compromise to a relatively level reading. Then glued my level on the tongue to match. The tongue level is easy to use while running the jacks. But at that point the shower doesn't drain very well, so I sometimes lower the tongue bit to help it. During all of that, the fridge works fine and consistently.
I also go to very little effort to make it just right. A block under the wheels on one side to get it close, and adjust the tongue jack to get it close, and I'm set. It is not critical or worth your time to perfectly dial it in.