Recommendations
On the refill valve and the top of the tank there are 3 lines, these are alignment lines to let you know when the atty is closed properly: if you don’t do that, the tank might leak, so make sure those lines are always aligned.
The airflow ring retention mechanism has a little spring and piston in it, they are not captive to allow cleaning of the cavity, pay attention not to lose them during disassembly.
This atomizer has a fair amount of hit, if it’s too much, it’s sufficient to lower the coil by a couple of millimeters.
If you would like a step by step build tutorial and/or more info check this video out: