I used the tutorial for changing dual coils to single vertical coil. It's too hard on the draw, I know I need to open it up. I have a aero mega and aero mini, I hate the dual coils. I'm so frustrated right now. I got the VC to 1.6 ohms and it looked beautiful but the coil was too narrow for a decent airy draw. I'm still going to try but I'm at a loss as to what to do next. Considering trading 2 regular protanks for both because what good is the tank if I can't stand the atty's? Is there anything I can do to retrofit the original atty's to the aero protanks? Tried doubling the rubber toppers and it just flooded. And I'm using a provari and love the protank 2 but I hate using the adapters for it. That's why I stuck with kanger. Even if I get a decent air flow on the VC they are such a pain to disassemble and assemble again. If anyone has any advice I'd really appreciate it, thanks!