I have an idea for a "automatic" mod. Well sort of "automatic" anyway. For those of you who like top-feeders if you have a tube running to your mouth-piece anyway why not add two small wires and put two contacts on it hooked to a touch switch circuit. That way it would fire as soon as the mouth piece touched your lips. I personally don't like top feeders, so I'm not going to make one, but I would like to see someone do it. Post some pics if you do... and if you start selling them cut me in 
