So as like many of you i had problems with spit back and leaking etc. This may not work for everybody but by simply switching to a higher vg juice. Max vg tbh it works marvelously. I know this may not work for everybody but just thought I'd share. I suggest not using max vg in every tank because some tanks and coils can't handle the thickness but for something like the subtank it seems better. Also don't clean out the inside if your coil with a cue tip because although it does a good job of cleaning you might move the wire inside causing an atomized short.
