Digital BW, The Print

Hi every body,
I'm a news comer in this group that has been recommended to me, 
after a first reading of some topics I'm sure that someone in this 
group will be able to help me.
I'm working at the calibration of my color workflow, my tools.
Soft: Monaco EZ color
Screen prob: Optix XR
Scanner : Epson Perfection 4490
Printer ; Epson R2400

My problem:
When I'm doing my profiles for paper/ink combination using my 
scanner, the profile gives a magenta cast to my grey scale. the 
Print after calibration is thus magenta (red) and a little to dark.
Is some one experience the same problem, and more of all found a 
solution?

The problem is the same for the color printing.
X rite tells that the OB of the paper is the reason but does not 
give solution. (actually my tests with other paper gives similar 
results)
Of course I'm using QTRip for full B&W photos and the result is 
perfect. 
BUT, I'm doing photos in B&W with only one object having one color 
in it. So, I've to print in color mode.

Any help and/or experience on these subject are more than welcome

Thanks in anticipation.
Best regards.
Daniel