Digital BW, The Print

I just installed the UT inkset in my new 1280. I'm filling virgin 
carts. All the inks are coming out reasonably well except for the 
Eboni. Little or no Eboni is not coming out. I've tried some purges 
with alternating cleanings -- no help. When I put in the Epson black 
I get a perfect nozzle check right away. Any suggestions on how to 
proceed. Perhaps a cleaning cartridge? Or is my 1280 one of those 
that can't seem to handle the Eboni?

Chris Hargens