I've still only been rebuilding for a few months, so I occasionally go back and retry tanks that I've had problems with. I pulled this AD Hector tank (on RM V5) and this Oumier Bombus (on Rincoe Manto Mini). Each had leaked out each of three times I tried. So I tried again...
This time, they both held. Sort of. A few minutes after I took this pic, the Bombus leaked out. Back into storage. The Hector's been behaving fine, and I've been vaping it a lot. I bought it to have a cheap rta to experiment with. Non-adjustable bottom draw, dual coil--not the sort of atty I'd expect to fall in severe like with.