I picked up a HorizonTech Arctic V12 on black Friday for a steal. I had watched a vid about the coils for this tank and was intrigued. The ones I have are just the ones it came with, which are the 12 coil(quad coil, triple stacked). Anyway I inspected it making sure the O rings were in place and that everything was snug. So, this thing ripped through the 3/4 of a tank of juice I filled it with, in like 10 hits. It was nuts. But it was leaking out of the airflow. Just a lil we aping at first, but then a lil more. I took it back apart and double checked the coil to make sure the O ring was there and in place, which it was, so I refilled it. Same results. I don't know if it's because if the heat, since I was vaping at 130W, but the coil is rated for 120w-160w, so you wouldn't think it should be an issue. The juice I was using was max vg, so that shouldn't be an issue either. So if there's anyone who has had the same problem, or that has any feedback, please let me know, thx! (BTW my HorizonTech Cerakoat leaked like crazy too. Do HorizonTech products just suck?)