I love the viewer. I'm using it on my Viewsonic G tablet. However, when I shrink the page down to size (as opposed to reading it fit to width horizontally), the black parts of the page don't appear as totally black, but rather as a bit lighter gray with a pattern of dots- a moire effect. It makes the rest of the art "pop" in a weird 3D type of way, and makes it hard to read. Any ideas what to do?