QTR-Quadtone RIP

I installed 2.5 on my IMac 800 MHZ Power PC running 10.4.9. I am
printing on an Epson R 1800.  It installed with no problem but the
prints produced do not match the print preview.  Specifically, I am
printing from Photoshop Elements 4.0 and I changed the image (TIFF
from Raw) to gray scale, choose QuadR1800-K7 in the printer set up,
choose QTR Gray Matte Paper in the printer profile and Perceptual in
the rendering intent and then send it off to the printer where I
choose QuadR-1800 K7. The printer then produces a colorful image that
looks like a 1960's rock poster.  Sort of interesting, but not B/W.