Recently bought new JVC widescreen. On regular 4:3 setting the picture is warped. The vertical edges are curved inwards so that the width of the picture is about 1cm less across the middle of the picture compared to width at top and bottom. The curve is slightly worse on the L-hand side. This is the case on all channels (terrestrial TV or DVD or PS). There are no speakers near TV. I tried moving the TV to the other end of the room and turning it 180 degrees. No effect. The curve is still there and still worse on the L-hand side. Supplier agreed to exchange TV. New TV is just the same: if anything slightly worse. Am I missing something? Or is this a quality control issue: JVC using a duff batch of tubes? Any observations gratefully received.