So I'm fairly new to the mac world, and I got this great idea to buy refillable ink cartridges for my epson stylus rx620. After I installed the cartridges (the directions say you can't mix the old cartridges with the refillable ones), the printer seemed to recognize them... but for some reason when i try to print no ink shows up on the paper. I'm not sure if this has something to do with my mac or if I need to ditch the refillable ink idea all together... help?