I just received a printer from WitColor that has 2 dx7 heads. Printer driver is all installed and ready to go, but the heads won't release any inks. I see that the inks are all loaded up to the nozzle, but the capping is not damped nor the heads. I removed the heads and tried to pump the inks by the syringe, and it worked by that way. I think there is a connection error or the printer is not detecting the heads, but I can't be sure. Did anyone have same problem?