Hi everyone. I recently took the leap from tobacco to vaping, and for the first night, it was great. I bought a Voopoo Drag 157watt TC Gene chip box mod, and a Nautilus X tank/coil, i was told it was better to simulate the effect of smoking a cigarette because of the low air intake, and some Liquid Ejuice 12mg. The day i got it i was vaping all night, big beautiful clouds and a smooth drag with a slight throat hit, exactly what i wanted, it felt great, however I left it with my roommate to try it out for a few hours and when I came back to start vaping again, any drag i took would cause me to cough incessantly, the mouth piece would get hot and barely any vapor would be produced. I asked him if he messed around with the settings and he swears up and down that he didn't but I can't be sure. I don't remember what the default settings were out of the box for the life of me, only that i was running it between 12-14Watts. Looking at my screen right now it says 1.79ohms, 12watts, and when i hit fire the V goes up on increments of 5, and the temperature is at 315F. Any help or advice would be much appreciated, and I'm sorry for the long post, Im very new to vaping and wanted to give as much info as i can before asking. Thanks.