Having recently purchased a Sony VPL CX1 LCD projector and taking a peek at the Service menu, I have a few questions. I have been fiddling about with the RGB values to achieve a better picture (taking note of the original values first of course). I would like to know what Bias is and does? Should this be left alone or can tinkering with this also improve the picture ? Any info on the best way to calibrate the projector would be gratefully received also. Currently (not having VE or AVIA discs) I have the colour, contrast etc calibrated to best match DVD played my faithful old TV (RGB Scart). Is this a good way to calibrate it? I tried using the THX Optimode stuff but wasn't that impressed. P.S. I find this projector the bees knees for the money. The picture is amazing. Makes a big difference in my appreciation of my Sony 5.1 receiver too Cheers in advance guys!