I did a lot of research here on the forum to decide between an Evod or a Protank. I finally decided on a Protank which I received yesterday. I was so excited, but have had nothing but trouble. I had read about leaking problems and what to do and what not to do, including making sure you are not unscrewing it improperly causing the ejuice to leak. I am using it on an ego 650 or 900 battery with the adaptor cone. The atomizer pops when vaping. The fluid leaks, or when not leaking, hot bits of ejuice fly into my mouth through the drip tip. It also gurgles. I have taken it apart, cleaned it thoroughly and filled it carefully. All to no avail. I am so disappointed. I bought my protank from vapingzone so it is not a knockoff. I have tried everything I can find on the forum, so I am hoping maybe you could suggest something I may have missed. If there is nothing I can do, and it is a total loss, should I have purchased an Evod instead? Thank you for any help, and I hope I included all the info you need. Oh...all the problems occur on either battery. Cathy