Success! Installed my new print head and replaced ink with Canon branded ink and my printer is now happy again!
It's amazing to think I was ready to scrap it and buy a new printer when it just needed a new part.
Thanks everyone for the support.
Thanks to both for your quick replies.
pharmacist - I have been using non-branded ink cartridges as a replacement so maybe they have finally caught up with me. I have been too frightened to use refill ink as I have heard it can be messy but think I will just go back to using Canon original...
Wondering if anyone can help with my MP800R print problems before I give in and buy a new (not as good!) model.
I recently changed the ink on several tanks (ran out approx same time). After doing so, I noticed the photo print quality was not as good as should be. (Normally fantastic quality)...