Hello fam. It's been a long time since I've printed and kind of let my Canon ipf8400 sit back and do nothing. When I decided to put it back to work my left print head went out. I bought a replacement and in the process of swapping it, the maintenance cartridge filled up. I ordered a replacement. I installed the maintenance catridge and as soon as I tried printing the other printhead went out. Bought the other print head replacement. While purging the ink to replace 2nd print head the maintenance catridge filled and my printer stayed stuck. I ordered another maintenance catridge (mind you I still haven't replaced the 2nd print head). It looks like my printer literally just wasted ink non stop until my 2nd maintenance cartridge filled up! So I still haven't even replaced the 2nd print head because my printer has filled up 2 new maintenance cartridges. So now I'm on my 3rd MC in 1 month and haven't even had a chance to replace the other print head. Why is my printer freaking out?? I'm afraid when I install the 3rd MC it's going to just pass ink until it fills up and errors out again. Anyone have any ideas??