So ive brought a new pack of 5 bvc and again im extremely disappointed. Im down to my last one and none of them has lasted over 2 days. I vape on 18mg nic strong menthol from halo (subzero) and i use 3.8 v on my 1600mah aspire vv. I suspect that there is gunk built up around the coil causing this problem. So does anyone have experience with cleaning these coils?! Maybe dry burning? Please i need answers! ive spent over 600$ on ecig and yet to find a lasting coil