I had a couple that were not sealing all the way. These doors latched very easy when you shut them which was also an indicator it wasn't sealing. All I did was to loosen the nuts on the outside of the latch loop even turns and then tighten the back nuts of the loops, pulling the latch in. It didnt take very much to get them to seal and you can use a piece of paper shut in the door to see how much contact there is between the door and the seal. It didnt take much at all, maybe one full turn on the nuts and it wasnt enough to visually affect the alignment when the door is closed. I have looked at my doors as a couple need to come out on the hinge side to be properly aligned and the only way I can figure to do this and to start shimming under the hinge....then I decide its not enough to bother with.