Hey Smilin, I've not had a problem and i only use cartomizers and drip into them as well. You probably are overfilling it but with that said, im sure ive done the same thing...and havent had the same results.
Maybe you should pm Ken and see if he could check it out as far as the seal around the atomizer ? That would be my suggestion if it kept leaking.
I probably am going to have to...It seems to happen more often than I prefer. Its not a new tech. for me, so once or twice I can see...but you never know. I also am using a rather thin juice. I actually have added VG to it several times to see if I can thicken it up some. I think there may be a couple different things that may be adding to the problem.
I just dont want to hurt it...she is a great little mod. No misfires..pretty good battery life, excellent size...all in all a nice mod...well you know!!
Thanks!!