Digital BW, The Print

Pardon these newby questions:

a) Is it possible that 2 days after printing satisfactorily my Epson 
C86 + MIS EZ inks begun printing horribly? I keep it in a closed 
drawer when not in use and I may have tilted it a bit while putting it 
on the table, causing bubble airs in the sponge.

b) After 5 consecutive cleaning cycles the print quality became even 
worse, and, what disturbed me most, the Ebony cart was completely gone!

What would you have done in my place? Needless to say, after a couple 
of months of happy printing, tonite frustration is on the rise!

Antonio