just got my panny 53wx42 last week. did some tweaks and couldn't get blue to good focus. in center it is acceptable, but only a very small area in the center. closer to edges, the lines are really blurry. tried both optical and electronic focus (but I didn't go back and forth between them, just did manual first, then e-focus). however, the overall image when playing DVD looks good to me (but this is my first big screen, so don't have much idea what a great image really should be ) should I be worried about that? is this common or should I exchange the set to another one? TIA for any suggestions.