Hello, Does the projected image align perfectly on your screen? I have a screen hanging from the ceiling with black borders and I am trying to align the image perfectly on it, but I am always missing about 5 millimeters on one side or another. (e.g while on the right bottom side the projected image touches the black border, on the right bottom side it is about 5mm inside the black border - the screen is 203 cm wide) So far I am just moving the projector and using lens shift in order to align it. Should I also try to use keystone, or I shouldn't bother? I can only notice that is not perfectly aligned when I go close and because of the black bars on the screen that I am trying to align it to.