After complaining to myself (yes I tend to do that alot, ) that my PT2 mini was too airy of a draw. I was in my daughters room cleaning and saw her little craft kit with decorative scotch tape. I thought to myself. hmmm Take a piece of that and wrap the bottom of the tank and cover two holes. Sure enough the draw is perfect....much tighter...Don't know why I didn't think of this a few weeks ago. Now I can enjoy more of my tank cracker juices without buying anymore clearomizers.