I only have a few minutes to respond but briefly, I highly recommend having the panel calibrated. There are two modes set aside for calibrations so you can muck with all of the other modes all you want and not disturb what your calibrator thought was perfect. Here is how my set was left. Frankly, I haven't bothered to use any other setting. Flesh tones from all sources have been spot on as far as I can tell.
He had trouble hitting the green but I don't think he worked at it too hard. I would have been a bit more meticulous. I figure that we will repeat the exercise in a couple of months and at that point I'll be looking a bit more over his/her shoulder. I don't believe that it is any real limitation of the panel. We will see when we give it another go in the future.