Digital BW, The Print

>I have tried everything for weeks trying to unclog
> the head.

Have you tried flushing the damper? It's not too hard to take the
cover off and get to the dampers. Service manual is free online:
http://web.archive.org/web/20031206214254/www.visual-artists.com/Manuals/manual3000.PDF

 In my case, the damper was completely blocked by dried out ink; it
was easy to clear with flushing solution. Unfortunately we followed
the directions for removing the damper in the 7000 service manual (to
pry it up with a flat bladed screwdriver). No instructions in the 3000
manual for removing damper; plenty of posts here about dampers in
general. Unfortunately in the case of the 3000, with the acute angle
you have to approach with a screwdriver due to the damper housing, we
found out when we came to reinstall the clean damper that we had
broken the tiny plastic nipple on the head that the damper attaches
to. In fact, the dampers come off easily--and safely!-- by simply
pulling straight up on them.

To answer my own question: I suspect you'd get very good results with
3 inks, people seem very happy with UT2 etc (if that is indeed a 3
grey tone situation). Plus, because of mislabeled Piezotone ink
bottles, I have effectively have only 2 tones in my 1160 and after
calibrating with QTR am getting very good prints.

The 3000 in my case was a free stuff item on craigslist that hadn't
been used for years, so we had nothing to lose. A few cleaning cycles
had the cmy heads printing a perfect nozzle check, but nothing
whatever coming from k.