Digital BW, The Print

>...i just printed with no icc. And the flat spot, is still 
> there, though a bit less pronounced.

Are you using a 21-step test file?  If not, you can download one from here:
http://home1.gte.net/res09aij/Test-files.htm


>Im going to make a guess, that if i reduce one of the 
>darker greys in the color controls, perhaps that will 
>in some way reduce the effect further. 

If you are familiar with Photoshop curves, they are much more powerful tools
than the driver sliders.  You might be able to eliminate the flat spot
fairly easily with a curve that increases the contrast there.

If you can sample the inks, it would be interesting to see if one of the
inks is obviously wrong.  If a dark ink is in a light spot or vice versa, an
un-curable flat spot might result in that color.  Try printing straight C &
M curves.  That is, take the 21-step file, convert it to RGB.  Then go to
the image adjustment curves.  Pull 2 of the colors to 255 flat lines.  The
image should be the pure color you want to test -- Magenta or cyan.  Then
print that image.  Have the driver set to No Color Adjustment.  You'll then
see if the cross-over, usually between 50% and 75%, is smooth or results in
a flat spot.  The C & M ramps should look alike.

Good luck.

Paul
www.PaulRoark.com