Hey guys i have a Smok cloudbeast on a smok 220w alien. I am using T10 coils but have used the 8s and had this issue as well. While vaping the slots where you can see the cotton through the glass will turn black, then eventually dicipate. When changing coils they are FULL of black gunk im using max VG is that what it is? i'm running about 130w which is recommended for this coil. Any help?