Also, what type of cable are you using. HDMI adjust automatically but if you have components,DVI,RGB that's a different story. I forgot what mode it was but I'm pretty sure you can change the aspect ratio or screen adjustment with non-HDMI such as my HTPC with RGB/DVI. But I do not have a Panny. Also make sure the projector is lined up to the top of the screen. If all else fail, just use the spillage to the velvet on the screen frame. You may lose 1" on both sides but that will not make too much of a difference. I actually have about 1/3" spillage on both sides for some reason and don't really bother me at all.