Digital BW, The Print

Sorry if this has already been brought up.  I just got a couple of 
packs of this paper and have been testing it on my Epson 9800.  In 
images with continuous areas of black, I'm noticing roller marks.  Do I 
need to change the suction or platen gap to account for this thickness 
of this paper?  (I've never needed to change either before, so I don't 
know much about changing them).  The roller marks aren't horrible and 
the average customer might not even notice them unless inspecting the 
print closely, but they are noticeable in areas of continuous black if 
you're looking for it.

Or does it need more drying time as it's passing thru?   (I should 
mention that I was printing at 2880dpi high speed, which I normally 
don't do, but I was in a hurry).

Thanks!

(It's a phenomenal paper, BTW.  I like it quite a bit better than 
Crane's Silver Rag).