Can't balance green with red and blue

[Daveoman]

I got a Video Essentials DVD and am trying to "calibrate" my Sony XBR rear projection tv. In using the color filters with the color bars, I'm able to get the red and blue to look perfect via color and hue but the green isn't right on. I can go move the hue around to get the green perfect, but then the red and blue are off.

Any ideas to the problem?