After days of nozzle washes, custody washes daily cleaning and ink filling, I'm having about 20% of my black dropping in test print.  The strange thing is I was having problems with magenta, which is common, I did a long nozzle wash and got this pattern.  It's been the same pattern for probably 20 test prints.  Any ideas?
	
		
			
		
		
	
			
			 
				