This sub-tank mini is bugging me a little bit...I think.
But, I'm not sure it isn't really the juice and is not actually a "tank problem".
I got a new tank and new juice at the same time.

so now I have too many variables in the equation.
Getting harsh hits...not hot, just harsh, like cough inducing. But I try a wide range of wattages. Up and down the scale. And when I "get it working well", it works for a while and then changes (because it warms up, or cools off?) and I have to adjust it again. Then there's this lemon-lime juice. I suspect it's irritating and inducing the cough. So I need to switch out to unflavored again. Then there's the nic level.
I can put it in cloud mode (sub ohm coil) and use mostly vg with no problems. But I'm not really after vapor production. And in non-cloud mode, I don't get enough nic with mostly vg low-nic juice. I want probably 60/40 PG/VG.
Just have to keep playing with it.
I like the design and options. I wish it had a top air-flow adjust too, it might cool the vapor. Overall it functions well, just is being "new" for me. I'll figure it out.
Grrrrr.