Warranty guys can be idiots from the local shop or chain store, to guys who actually know what they're doing. Hopefully it's someone who knows their stuff, because it shouldn't be a big deal if it is just a grayscale tracking problem. He should have to use a colorimiter and set g2 levels most likely, not difficult for someone who know's what they're doing. But for a worker-monkey helper guy, well... who knows.....
