Digital BW, The Print

Hello all, I just got my replacement 1160 from Epson after my first 
one just died upon start-up.  This time the Epson inks installed 
and "charged" properly.  I printed a letter-sized color print on 
Epson Heavyweight Matte, and then an A3+ color print out on EAM.  
Both looked very nice.  

However, I thought maybe I saw a flaw on one and as a precaustion 
decided to print a nozzle test page.  After doing so I saw that one 
of the black areas had a gap.  So I ran a head cleaning cycle and 
printed the nozzle check again---gap still there. One more cleaing 
cycle, print the nozzle check once more and now only the black 
nozzle patterns printed, no color nozzle patterns at all (!?), so I 
tried to print again a nozzle check pattern---this time a blank 
sheet of paper, nothing printed at all!  Try again, same---blank 
sheet!  Head cleaning cycle, try again, blank sheet!  Try to print a 
letter from MS Word, blank sheet.  Re-start printer, same thing.  Re-
start computer and printer-again same.  So, now I'm left with all 
blank sheets printing.  What the.....?!  

I searched the archives here and it seems I either have a clog (of 
ALL heads?) or air bubbles.  Is my assumption right?  Anyway, I went 
ahead and just dropped some Windex on the felt pads, pushed the 
heads back to their proepr place and am waiting overnight. Hopefully 
either the heads will unclog or the air bubbles will work themselves 
out.  Any other suggestions or ideas here?  Thanks (again).

Regards,

Richard