That's no good. You really need to level it. Ideally, if you open the door and let it go, it should shut all by itself. That way it will never hang open if you forget to close it totally. So it actually needs to be tilted ever so slightly backwards. If you've given up with messing around with the feet, I would go get some small plastic shims, which almost any building supply store should have. Can't remember what department usually has them but maybe with the chair feet and sliders and such. All you have to do is get the fridge up a fraction of an inch to get the shim under one foot, and then if you can't lift the fridge and slide the shim at the same time, you can use a hammer and a small piece of wood to slowly knock the shim until you get the height you need. Even a wood shim would work but the plastic ones are much better for this. The wood ones can break while you're tapping them. You can stack the plastic shims, too, if you need that much more height. They have little corrugations so they stick together when stacked.