For the most part, all top coil RBA's will leak to some extent. It's the nature of the beast. You should leave a breather hole in order to wick properly and that's the issue.
I knew this fact, but I'll tell you it got drummed into me by my wife one night. We went to a comedy show a few weeks ago and I asked my wife to put my Provari with an AGA-T on it in her new Coach purse in one of the side pockets. It was standing up when she put it in there, but at some point, it fell over. We got outside about 3 hours later and I noticed half the tank was missing. That particular tank had a juice call Night at the movies, a buttered popcorn flavor. My wife is not real happy that her purse smells like a movie theater now, guess a trip to the Coach store is in order now.
Bottom line, keep them upright!!
Sent from my phone with an identity crisis.