I've had my 27-inch Panasonic for at least five years. It's a great TV. But a year or so after I bought it I noticed a very slight greenish tint when watching some movies. On some films it is almost imperceptible, on others it is more pronounced. I took my TV in to a local shop when it was still under warranty and I think (I'm not sure) that the repair guy might have fiddled a little with the gray scale. But his attitude was, basically, "Hey, this picture looks better than 90 percent of the sets I get in here--what are you complaining about?" I got the feeling that he wasn't too interested in really trying to fix my problem. He had to make a minimal amount of effort because it was under warranty, but that's what he did--the minimum. The reason I bring this up is because all this time that slight greenish hue has continued to bother me. When I described the problem to another shop owner recently he said it was probably the green gun and that he could adjust it. Adjusting the green gun is the same as adjusting the gray scale, from what I understand, but like I said, I'm not sure the first guy adjusted the gray scale, or really did much of anything at all. This new guy also said I should have my picture calibrated every couple of years anyway. I have two questions. One: What do you think could be causing the greenish tint? Two: Is there any point in hauling it in to another shop to see if they could fix it? Any suggestions at all will be much appreciated!