I have several 510 e cigs and a Prodigy v2. I want to try cartomizers. Here is my question.....When I go to a site that sells cartomizers, they don't specify anything (unless I overlooked something) about what type of e cig do u have or anything which makes me wonder what you need to even use a cartomizer. Help please, I wanna try some of these. They are CHEAP. I may start using them but not sure if they will even work with my 510.