Didn't adjust color temp
I didn't actually change the color temperature--I have it set to Normal and so my RGB gains/offsets are all set to the defaults. Those controls don't even show up for me unless I set the color temp to something other than Normal.
Are you seeing shifts in some colors? I was able to set the color levels correctly through the use of color and tint. I didn't need the granularity of individual color channel adjustments.
I would try Normal--if it doesn't work, either get a calibration disc or use color bars and try to tweak it by eye, if you can.