text: Those of you using V wicks – do you find that they tend to leave black residue?
  
  There is a FO that is driving me insane, I've tested almost every wick under the sun. Recently I've been testing V wicks (I use C3) and the HT is a bit better than with other wicks but there's a fair bit of black residue on the wax, even when trimming the wick before every burn. I don't even want to imagine how it'd be if I didn't trim it.
  
  I've tested another FO to see if that was the problem but lo and behold, black residue :/