Is it still leaking otherwise? Found this link that might help out: Kanger Subtank Mini LEAKING | E-Cigarette Forum
There's that one tiny clear o-ring under the coil that can get dislodged - maybe it's keeping you from tightening the coil properly? And I'm reading more and more that sometimes you get janky o-rings with this atty. Sometimes with me, a thorough disassembly and cleaning fixes it - but I don't have this particular atty yet - just a bunch of similar ones. Sorry I couldn't help.![]()
I've had several friends complain about leaking. In all cases it was a bad AFC. It's easy to test. Put in an old dead coil, fill the tank with water, turn the AFC to completely closed, assemble it tightly. Take the drip tip off and blow into the top hole. In the bad ones I tested, water came out in the spaces on both sides of the AFC adjuster ring. I swapped in a SS AFC and there was no leaking. If there's much vertical play in the AFC adjuster ring, it's likely the cause. If water comes out somewhere else, you'll know which o-ring to replace.