Digital BW, The Print

I'm wondering if there's a solution. I decided to test black and white 
printing on the C86 to learn it and then move on to the 2200. After
pouring over the board here, I ordered the MIS inks (eboni, cyan,
magenta, yellow). I've just installed everything and I can't get this
more than a (literal) banded shadow of black (pale, pale, pale) to
print. The colors simply won't print on the test page. Has anyone run
into this? Is there a solution? I shook the inks, snapped them in and
I can't guess what's wrong. I've installed printers and replaced inks
many times. Thanks....Madeleine