Do I just have bad luck or are they all annoying leaky POS..I got my first RDA cool but leaked. Bought a second cool but leaks as well..are they all like that? One is bottom airflow one has the airflow on the side about halfway up..both leaky af. Don't think I'll be buying another one. For the record I have a Wotofo Lush Plus and a Vandy Vape Icon. User error? or.. just sh*tty rda's?