My eleaf pico will burn coils in my kanger toptank mini and melo 3 mini. It only does this with non tc coils. I vape in between what the recommended wattage for the coil is. However when I use .15ohm tc coils in my pro tank mini my coil usually lasts me about 2 weeks. I've tried these oils I love cookies, leprechaun, choco cow, and swirl. I always chainvape too. I was wandering why the ni200 coils don't burn and the wattage coils do? I always get a dry hit on both tanks within 6 hits while using standard coils... I properly prime them ant let them set. Don't know what I'm doing wrong...