Datacolor User to User Support Group.

I've just purchased the PrintFixPro suite a few days ago and am in 
the process of profiling my favorite papers on the Epson 7600. The 
Epson enhanced matte paper profiled beautifully with just a touch of 
a yellow cast easily corrected with the yellow/blue slider. The 
Epson premium lustre at first glance also seemed excellent until I 
looking into the shadows of the prints and noticed a yellow cast and 
posterizing affect in those areas. Upon closer examination of the 
PDI test image, on the Kodak gray scale, only patches 8, 9, 10 and 
other areas with the same density were affected with this yellow 
cast. Its really strange in that all the colors outside the density 
of those patches print great – deeper blacks included. In one of the 
previous posts someone suggested changing the rendering intent to 
saturation and this removed the color cast but in its place left a 
gray, posterized look which, especially in areas of detail such as 
hair, didn't look good. I used both 729 & 225 patches, but the end 
result was the same.
Any help would be greatly appreciated.
Thanks
George