Thanks of the additional information.
Were you using Epson carts prior to installing the refill carts?
If you reinstall the previous carts you were using, how does your printer(s) respond?
Did you flush your print head with our PiezoFlush print head cleaning kit before or after installing the refill carts?
Did you use the print head cleaning kit on both printers?
Are red lights illuminated above all 8 carts in the cartridge chamber?
Based on your order history, I see you bought the print head cleaning kit in Feb 2013, then a 110ml bottle of PiezoFlush in Nov, and a set of carts without ink or filling needles earlier this month. Have you used the print head cleaning kit over the past year with success, or did you just use it for the first time recently? How did you plan to use the carts without ink or filling syringes? Were you planning on filling them with PiezoFlush to use as cleaning or storage carts?
I can send you a set of replacement carts, but the answers you provide to my questions above will help me determine the cause, and therefore solution, to your problem.