Digital BW, The Print

I recently purchased a refurbished Epson 2200 for making black and 
white prints with MIS UT7 inks, using the eboni black, epson driver and 
the Paul Roark curves. When printing on Epson Premium Glossy, in the 
very darkest areas of the print (and only in those areas) I get little 
dotted track marks which I belive are coming from the tiny metal spurs 
or pinwheels that are part of the paper feed mechanism. The marks seem 
to exactly match the spacing of those wheels. If I switch to Epson 
Enhanced Matte there are no marks, but then the blacks are not as deep 
and at certain lighting angles look "chalky" rather than "inky."  

Is there something I need to adjust on my printer? If not, can anyone 
recommend a paper which has curves written for it (either by Paul Roark 
or someone else), which has (relatively) deep, inky blacks, which is 
archival, available in 13-inch wide sizes (Super B) and which will not 
show these tracks? I haven't yet tried the Epson Premium Semi-gloss 
which Paul highly recommends. I am willing to compromise on the 
archival qualities if I have to. If there are already answers to this 
posted I was unable to find them; please point me in the right 
direction. Thanks.