I've been vaping for over a year now and just recently got into rdas iv had my athena squank mechmod and rda for about a month and a half and everything was going fine I was chucking clouds and just recently this last build has been harsh like more then usual its harsh every hit and I've been using 3 mg nic since I started never changed it's a dual coil build 0.3 ohms using a single 300mah 3.7v imr 18650 battery