I really like the Protank, except the airy draw. It's more airy than my DCT with the smoktech cartos, and definitely more airy than the iClear 30. After reading around and looking for fixes, I couldn't find a single band-aid or toothpick in my house. So I went the scotch tape route and it worked like a charm. I just wrapped it 1.5 times around the point where the tank meets the Tesla. Drew on it, found it a tad tight, so I gently poked a hole in the scotch tape that was covering one of the air passages. Now it's perfect, and the flavor has improved a bit (although the flavor was never bad to begin with).
Thought I would put this out there as another easy, ghetto fix
Thought I would put this out there as another easy, ghetto fix