Hi all - I have a newb question for the experts. The wife and I have both purchased several iClear 1.6ml clearos and have had several issues. In total, we have bought six of which two have leaked, one I feel like I can't get any draw from it and another that the draw is too "airy". Are these just bad clearomizers or are we doing something wrong? I have been extremely careful not too use the tank cracker juices in them. Any suggestions and/or comments would be most welcomed. Thank you. 