Digital BW, The Print

After reading about the Costco Kirkland gloss paper in the group, I 
have been printing B&W proofs with my Epson 2200 printer loaded with 
MIS UT7 inks (with Eboni black).  

In PS CS Print with Preview, the Source Space is Adobe RGB (1998) and 
in the Print Space I use a profile for SP2100 Premium Semi-Gloss 
paper.  In the printer Media Type I selected Epson matte paper since 
the recommended paper setting (premium semi-gloss) was not available 
with the Eboni ink in the printer.  In the Mode/Custom/Advanced/Color 
Management, selected no color adjustment.  I printed the image 
without applying any Paul Roark curves and the resulting image looked 
like a slightly warm, glossy silver print!  The print did not have 
excessive bronzing in the shadows.  I was indeed impressed.  I 
thought I had found the right printing process to produce good B&W 
digital prints.  But there is one problem.  I'm seeing roller
tracks 
across the print as it moves through the printer.  Apparently the MIS 
UT7 inks are not drying fast enough on the glossy paper or the 
printer is laying down too much ink for the selected paper. 

I changed the ink to Photo Black and selected Premium Semi-Gloss 
paper in the printer media type in the event there was a conflict 
between PS CS and the printer, but the roller tracks remain in the 
print.   

When I print with the Epson color inks, no roller tracks.

Has anyone encountered this problem?   Is there any way to reduce the 
roller pressure on the paper? 

Thanks,
John