I have been struggling for quite a while with direct dripping and pretty much everything else. I've tried the recommended 510 cartomizers, atty/cartridge combo, atty/drip tip combo and finally atty/cut down empty cartridge combo. I've found all of them inconsistent and very annoying. almost all are good for a few drags and then crap out. I believe this will be the solution for me. I usually do 3 drops and end up getting liquid on my bottom lip and it's even created a burn before. I'm really hoping this helps and is the solution I need for direct dripping. I love the vapor and taste DD provides but the annoyance of minute amounts of hot liquid working their way through a drip tip became to much. I'm heading to the pet store in a few to try this out. Thanks so much for the post