Greetings. I'm new to this forum, been lurking for a while, but have finally decided to start posting. I have been vaping for about a year now. I started with the "cigarette" models (Encore I believe, then gradually moved up from these to the Ego T, then a pipe mod (not sure the brand - it's what Vaporesence in Denton carries). I bought a vape-O-Matic tankinator about three months ago after giving up on the Ego line due to leaking and clogged atomizers. I use the Boge 510 cartos in the tankinator and have had pretty good success. I recently bought the BFT, and have had nothing but trouble with leaking down the center. The BFT also had extremely tight O rings, which they replaced today, but it still leaks and gurgles with several dual coil cartos in it. They kept trying to put new cartos with smaller and smaller holes, but we finally gave up as it kept leaking. They tell me that they are getting new cartos that are single coil, and that I might have better luck with the leaking issue. He also gave me an unslotted carto that I will try and drill a hole in with my drill press to see if I have any luck with it. I also found the dual coil was just too dang hot, so I would just as soon go with a single coil. Cheers!