I have just mounted a SONY VPL-BW5 to my ceiling in the basement. I am in a rush right now, so I haven't been able to get a picture, but I will do my best to explain the image. The projector is around 12' away from the way, and is projecting a 100" diagonal image on the screen. My problem is that while the top of the projected image is even with the ceiling, the bottom is not even with the floor. After examining it, it seems that the height of the left side of my projected image is around 1 inch longer than the right side, leading to a non-rectangular shape. I can't exactly visualize what adjustment would be needed to correct this. Anyone have any ideas?