Just bought and installed Piezoflush and cartridges for an Epson 9900 that has been clogged for a few months now. On the left side, I installed C and Y. For Yellow, I can see the red solution moving through the lines, but Cyan won’t budge. It’s as if there’s a clog in/near where the cartridge is installed. I filled each cartridge with about the same amount of lush, but it also appears the Cyan hasn’t used up yet, while Yellow is significantly lower.