I have a basic understanding of the grayscale. Use the cuts and the drives (sometimes called bias and gain?) to affect the high and low end of the scale, shooting for D6500k across the board. But my Z1 LCD projector also has gamma settings, and I'm not sure how to eyeball those. With the cuts and drives I know you are aiming for the proper balance of red, green and blue, but what are you supposed to do with the gamma settings? Am I correct in thinking this affects the intensity of the light? To make sure that, say, a 100IRE screen is really 100IRE? How would you use such settings, if you wanted to tweak them by eyeball?