Yellow and red super, but Blue only makes problems

We ordered the three-pack for our PIXMA MP640. Meanwhile, all of which are used. In the past I've also done a very good experience with Pelikan cartridges for my Epson. On the whole the cartridges SIDN also good. Yellow and red could be used as if it were the original cartridges. Likewise, the word is good. Unfortunately we had the blue cartridge from the outset problems. This cartridge was the first who had to be replaced. Under normal onset she clicked a while, but recently not extinguished the lamp and the printer recognized the cartridge. After a little trial and error, we note that it will work when you though as deep as possible in these presses, allerdinsg without snapping, so only as long as the lamp is still burning. Here you have to watch that may stand the cartridge only slightly higher, otherwise they jammed the back and forth, which is not be great for the device. The position was found and once again we were satisfied (we are just modest), but when it is the opposite cartridge had to be replaced, the game began all over again and then again at the other adjacent cartridge. It's a hassle, and every time to test patterns are printed. So the Blue Cartridge is a disaster !!! I wonder whether having such a Monday model, or whether all Blue cartridges are so deficient. As I said, the other cartridges may well serve with the originals, only in blue, the devil is in it. With all Rumgefummel and proofs we also wahrscheinlic saved a penny and upped the ante time and nerves: -. ((It must not be there Pelikan must still nacharbeiten.Schade !!!.