Hey, I'm using Kanger Subtank tank on an aspire pegasus mod. I recently bought some Kanger OCC vertical coil packs with nichrome, at 1.2 ohm. I'm currently using regulated wattage, at around 14 watts. The juice is 80/20 VG/PG. Yet my coils burn out incredibly fast, I've switched them twice today. I prime the coil properly. Is my tank or mod busted? The vape is about two years old, and I've used vertical coils before, which have lasted much longer. I am fairly certain that the coils are legit, and not any kind of knockoffs. Any help would be much appreciated.