Homebrew PCBs

I cleaned the black print head today. used a 3/16 clear tubing and 
squirted about 3 squirts of windex with ammonia in the tube. put the 
tubing over the little thingie sticking up in the cart well, and blew 
in the tube---you wouldnt beleive what came out. the head still had 
black ink in it even after using the red dye, i did that about 4 
times and the liquid cleared up. of course i had to use several paper 
towels under the head. this may have been the reason the printer 
wasnt printing as it should. we will know tomorrow as i will give it 
another try if every thing works.
mebo