I have no idea why my coils are doing this.. I'm new to coils but i know how to set them up. So this problem happened about 2 weeks ago when i made a NI80 6 wrap dual micro coil they vaped great! so 2 days past of vaping on them and i noticed a weird burnt smell, so i looked at my coils while pulsing and i noticed one of the coils were glowing red while pulsing, fired it a couple more times then "bam" coils caught fire.. anyone know why this happened? because it's happening again.. Seems to always happen on the 2nd or 3rd day of vaping on them.