I'm in the market for a new dripping atomizer. I saw a video showing how to turn cartomizers into atomizers; does this apply to ANY cartomizer? I found these, and that's an awesome price, but I really don't want to use the filling material. I can just take out the filling and use it to drip? That seems too easy, so I feel like I'm probably missing something. I'm getting really annoyed by the breadth of information out there, so I figured I'd turn here in hopes of a straight forward answer. Thanks for your help!