Digital BW, The Print

I have recently developed a couple of problems with my 1280 loaded with 
MIS UT carts. The first issue is a very noticeable green cast. I have 
triple checked my workflow as well as nozzle checks to no avail. I 
decied to try a black-only to see if the Eboni ink looked right - the 
color was OK (warm but free of other colors), but I have microbands 
except in the first 1/2 inch of the print. After the first 1/2 inch is 
printed the banding starts. This is not visible in a color (greys) 
print. I have tried alignment and cleaning, but no luck.

Ideas?

Keith Hollister