I have a Panasonic DVD-RP91 DVD player hooked up to a Mitsubishi WT-46809 16:9 HD-ready TV. When I view anamorhpic widescreen DVDs that have a 2.35:1 aspect ratio, the letterboxing bar at the top of the screen is much smaller than the one at the bottom of the screen. When 1.85:1 aspect ratio anamorphic DVDs are viewed, approximately 1/2" of the top of the picture is cut off. It seems as if the DVD player is throwing up images onto the screen that are shifted 1/2" too high. I know that it is not an overscanning problem with the TV. The DVD player is causing this problem. With other sources, such as VHS and laserdisc, there are no such vertical shifting problems, as the letterboz bars are of equal height. I am wondering if anyone else has experienced such a vertical shift with the Panasonic RP-91 and if so how is the problem remedied? I also experienced the horizontal shifting to the left as many others have, but I addressed that problem with the stop button and joystick fix. Any comments or recommendations would be greatly appreciated.