I need some help. I changed the dampers and have cleaned the print head. I have ink going through the heads but nothing will print. I changed the spit top and there is no ink going to it either. What could be wrong? Is there a pump or something that could be bad. All I know is that there is head going through the head when I put it through with a syringe but when I do a nozzle check, nothing is printing. PLEASE HELP ME.