Digital BW, The Print

Here is what happened,
I have been now printing over a month on my 1160 with a newly 
installed CFS and MIS VM inks.
I already forgot what a bad nozzle check can be. I got spoiled by 
perfect looking ones.
Until today. My bottles are about half full and I had to reset the 
switch in the color ink again,
after I did it according to the instruction(I did it before also, an 
everything was fine) I printed a photo and it came out really bad.
I looked surprised and ran a nozzle check. It was not very clean in 
the color positions. I had to ran 3 cleaning cycles.
After the first one everything became nice again, except for one line 
in the third colorposition. In the second row one line seems to be 
missing on all my nozzle checks. Exactly in the same place. I printed 
a picture and repeated the cleaning cycles(3) Nothing.
It is still missing. I wonder what could this be? Did I make a 
mistake when I was resetting the Ink switch? i really hope someone 
wil write and say:
It is ok, don't worry it will go from itself, but I have a strange 
feeling that it is not ok. Can anyone help with an advice?
I am a novice for fighting with nozzles. I have a set of Windex but 
really hate to use that. 
Piotr Janowski
piotr.janowski@...