I am setting up my wall screen and noticed the bottom of the picture, with test pattern or DVD, is about an 1.5" narrower then the top. The projector is mounted from the ceiling and I can't find anything in the menu's to bring the bottom out or the top in. If I use a level on the top it seems to be in about 3/4" on each side.

I know from using projectors at work for PC's there should be a way to do this but I am having zero luck with the manual or trail and error.

The best way to fix this is to hang your projector correctly. Using keystone correction will only hurt the picture quality.