Also, unless it has riding hinges(angled to allow the
door to ride down and close by itself), you may need
to turn out the feet at the front of the unit. This
will cause the freezer to lean back - about one inch
back at the top is usually enough, though I visited l
an older house where the owner had a two-by-four
neath the front feet in addition to the feet on his
fridge being nearly screwed all the way out!

Turns out(pardon pun) his kitchen floor was down
8 inches in the middle from at the edges near the
walls, and that's in a small 10' by 14' kitchen!