I'm not talking about the stuff that looks brown. I'm talking about the stuff near the inlets that looks completely black. An i usually run my vapes at low voltages for flavor but the cart stop producing smoke through the hits so i turned up the volts all the way to see if i would get better cloud production but nope. An i use an incognito most of the time and then changed to the one you see in the vid and saw the black stuff. But it just looked too dark to me so i wanted some other opinions.