The idea behind "just scan" is to bring the picture in "as is".
So I'd tend to lean towards the possibility that it may be the cable box. You might want to call to see if they can adjust the output on the box.
--HDTech
I just purchased this terrific set, recently connected an HD cable box to a HDMI port and started to experiment with the picture size modes. The picture in the wide-fit mode is shifted left about 1 inch so that a 1 inch black bar is seen on the right. I have been unable to make any adjustments to recenter the picture and eliminate this narrrow bar. Curiously, the picture is perfectly centered in the 4:3 or Just-Scan modes. Is this a problem with the cable box or TV? Can it be adjusted?

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