Hey kdsdata - as a fellow canuck I'll help you out here. Go buy two new sets of canon OEM carts (on ebay they are about $100 usa per set) DO NOT use any other cart in the printer but OEM Canon made carts. The quality as well as the technology in these carts is what keeps the ink flowing properly. You will never experience any of these issues you mentioned in this tread with the inferior carts you tried.
Follow the refilling method that Joe explains in his videos to the letter - happy printing !!
Follow the refilling method that Joe explains in his videos to the letter - happy printing !!