Have you ever thought about using this kind of set up in a carto tube? The whole screws and post thing. I wish someone would do it and relieve me of nr wire. I love my v3 penny btw. I have 2 and short tank (v2) and modding a v3 mouth piece to fit it. I love the ease of this set up so much that I risked destroying my microstick in order to mod it to take the penny v3. It was totally worth it!