I keep having this issue with my AC9 where it is leaking at the bottom of the mod. Not down the 510 connection, but it is seemingly leaking out the base of the tank and then out the seam of the base of the RBA. it's almost as if it is somehow leaking straight out of the bottom of the tank but I've inspected it all over and there are no cracks at all in the tank, so the only thing I can think of is that it is somehow coming down the center post and resting inbetwen the bottom of the tank and the bottom cap. I can't make heads or tails of it, I was wondering if anyone else had the same issue before with this atty.