Hi, would like some advice. I find that I have to change my coils almost every week. It's as if you're running on a low battery, and once the coil is replaced, the vaping is back to normal.... How long should a coil last? I purchased the double pack, and fill both tanks in the mornings, and then refill one at night. Also, can you clean the coils? (I only use Twisp liquids)
