There is one precaution to take though: if you permanently remove the airier plugs, you will end creating another problem. Remember, inks are made of a volatile liquid combined with pigments. So removing the air plugs permanently will result in coagulation of the ink inside. The key here is to...
I had the same problem using the clear refillable cartridges.
I thought about one of the replies above and it made sense to me that the clear refillable cartridges do not have the pump found on OEM cartridges. So what happens is, there a "NEGATIVE" pressure build-up inside of the cartridges...