Digital BW, The Print

I have read the links from Mark and decided that I have a deflected 
nozzle (black).  The advanced nozzle check revelas that the lines in 
Row B are not evenly spaced - but there are only 2 lines from the 
black nozzle that are slightly off.  Per the instructions from the 
piezopro forum, I disconnected the damper from the black nozzle, 
pulled flush through the line, replaced the K6 black ink and refilled 
the line.  I then did 2 KK2 cleans to make sure all the flush was 
gone.  Advanced nozzle check looks the same - there's no 
improvement.  And printing a 21-step wedge reveals fine banding in 
the same places - roughly 10-30% and again 55-75% with stray black 
dots around the text (which is sightly blurred).  The rest of the 
step wedge is smooth.  

In addition to the Row B problems, Row D has some stray ink dots that 
cause the lines in the first 3-4 inches to be misaligned.  E,F and G 
are ok.  

Any further suggestions?

Thanks,

Jenny Ellerbe