Digital BW, The Print

I spent most of yesterday testing different versions of Gimp-Print and
QuadToneRIP with the UltraTones. I still can't get prints from
QuadToneRIP, but I'm getting good results with the latest development
version of Gimp-Print (4.13.14), 4 ink printing mode and Paul's 1290
curves. I had to modify the curve a little, but basically it looks
pretty good!

Problem is, on Ilford Smooth Pearl I get big, fat roller marks on the
print. It's from the exit rollers, I'm not talking about the pizza
wheels. I've tryied reducing the density of ink, but even on very low
densities the marks are visible. I get the samme effect on other papers,
like Epson Premium Glossy and Semigloss. They're not visible on matte
papers though.

I've tried removing them entirely, but the rollers and the pizza wheels
are connected in one big piece and I couldn't figure out how to get it
out of the printer, besides I got worried that I might ruin the printer,
so I put them back in place.

Any ideas on how to clean these rollers so they don't leave marks?

--
Daniel Staver
http://daniel.staver.no