I think the carto filler is too tight. The juice doesn't soak in. I don't know how Drew got--what did he say--60 drops or something like that--into one of those cartos. After about 10 drops, the juice just sits there, and if you don't plug the center hole, it all just runs on through. I am hoping that these will be better in the future--I did p.m. Drew and tell him that these cartos were definitely flawed, so he knows.