Mattyinhull said:
Don't worry Hat, I've been around browsing this forum for a long time I know you're here to help

To be honest I've only used 2 sets (one set filled the German method and the other top filled) of carts over a 2 year period maybe its one of those that is in fact the problem. It does make sense as the problem is always with Magenta. Before the problem though, my nozzle checks always came our perfectly, wouldn't ink starvation show any missing ink on them?
Thanks.
OEM Cartridges maybe the thing since sliced bread for refilling but they can and do get tired
supplying enough ink to keep the print head in the manner it is a custom too.
It is wise to watch out for the slightest drop in print quality while printing
as this is usually the first sign of inadequate or poor ink flow.
Giving your cartridges a good purge from time to time is a great way of bring them back to full health again
so therefore it is an exercise that pays off in spades handsomely and well worth doing.
Nozzle checks use so very little ink and cannot therefore put enough demand on your cartridges to show any drop in output,
the nozzle check is directly related to the print heads performance and has nothing to do with the cartridges performance.
It is for that very reason, why is it recommend to run weekly or fortnightly nozzle checks
because it uses far less ink than a normal head clean does and it insures that you can print in confidence
that lovely photo they way you planned, (Clog prevention).
Cartridges refilling, cleaning and maintenance are totally separate to your printer that is why
Canon say that anything other than their cartridges (Not refilled that is)
are guaranteed to perform in your printer every time for the very same special photos.
So get your cartridges right and youll never have another problem with any other print head from now on
and you should never have a need to take it out of your printer to clean it again.
Cartridge refilling is extremely easy thing to do and any guy can do it but
keeping them in that working condition take a bit more taught and forward planning,
just like a garden the best looking ones need that bit more maintenance to stay that way.
Happy careful Refilling..