I am using my UFS with a 510 atomizer the one where the coil is showing and around it some kind of steel stuff. Anyway, no problem with the UFS until I put it down for like 5 mins vertical position. Then when I pick it up. It is dry. Painful dry! When I put it for the 5 mins the juice control is half a turn open and the air control is quarter turn open. What might be happening? Is the liquid going back to the tank. Is this scientifically possible since there should be air inside the tank (or is it vacum)? Or is it going through the center post into the collector tank? It is not a big deal since 3 drags without button solves it but it is annoying when you forget and get that scratchy throat that makes you cry sometimes 