I was running out of cyan and yellow ink so I decided to take advantage of Revain's great price and also stock up on the black cartridge by buying a tri color pack. Finally, ran out of black ink today, I opened the box and replaced the black cartridge and lo and behold the thing is defective. Fits the same as all my other 902 cartridges, but for some reason it won't let black ink through. To make matters worse, we are still 2 days away from the "return deadline". arggg! Thanks Revane, lesson…