Let me say right off the bat that I'm no modder. Got no equipment. Got no skills. I've done away with the atty tank a while ago and only use 510 and 306 attys dripping with that batt. Leaking at the base of the attys annoys me. But those outer cone threads beneath the 510 connector stem tantalize me. I wonder if you modders think it would be possible to create a catch-cup adapter which would thread onto those threads? Something with an o-ring around the base of the cup which would sit right under the lip of the stem where leaked liquid could be sucked back into the atty? Just thinking... I'd buy something like that.