Digital BW, The Print

I just installed a NMC CIS system on my 1280, and as 
mechanically inept as I am, it was easy and works great.  
Anyone thinking about this system can easily install it.
I switched from epson OEM to MIS archival 6 color, using the 
DDblack.  Using the color cal profiler, I am able to print beautiful 
full color, but no such luck with b&w images.  I had great results 
with the OEM dyes, but these inks are a different animal.  Any 
suggestions on settings.  With the color profile where full color 
looks good, the b&w image is very dark, slightly posterized, and 
rather green looking.  Using the color controls when you 
customize PRINT, if I set the colors at the selenium settings
Cyan 2, Magenta 10, Yellow 20. the image looks pretty good, but 
there seems to be a hint of cyan in the lighter areas, that I wasn't 
getting the the OEM dyes.  Cutting back on the cyan or adding 
magenta isn't helping much.
Any suggestions would be greatly appreciated, as I am burning 
thru paper with my testing.  I am printing on LPM.
Thanks!
David