Just picked up a nimbus last weekend and as much as I love it, my coils are gunking up really fast. Just completely covered in blak gunk that starts moving on and blackening the wick. I'm using 26ga kanthal and have my dual coil coming out to .5 ohms. I've never had this issue on my trident v2 or igo-w. Any idea as to why this is happening? Thanks in advance