Tried posting in a forum about this tank but wouldn't let me. Anyhow I just bought the kanger sub tank less then a week ago. Have already burned out 3 coils. The .5 and 2 of the 1.2 ohm coils. The .5 I was using on a dmod with an 18650 battery. Recently bought the ipv3 and used the 1.2 coils with that at no more than 20w and fried both of them. Then I tried the rebuildable and that burned the first night. I'm very mad since I paid almost 60 bucks for this tank. Any ideas to help me out?