All but the 3.0's are the new ones, they mixed them into the order. Can you tell a difference? I can't.
Otrpu- I just took a 510 round cartridge, stuck an ink pen in the bottom to stretch it out a little and stuck it through the grommet and over top of the ceramic cup. It's pretty snug and goes down farther so it won't pop out so easy. Haven't vaped it yet but it may just work. Give it a try and let me know.