Just a general warning to the community I recently bought a smok Tfv4 sub ohm tank and it comes with the triple coil pre installed. This coil works fantastically and the only problem I had was the tank got a little hot ( I ran it at 50w on a IPv4s) however today I changed coils to the quad coil and pre juiced it and filled a fresh tank with some good ole space jam Pluto and broke it in and left it to come back in a hour. When I picked it up half the tank had drained out of the air holes and other people online had the same problem so be warned unless you are running it with a max vg juice or you plan to vape through the whole tank at once