I don't know if anyone has issues with their protank 2 but I hear a lot more negative than positive on them. I was messing with one of those bootleg ones and I couldn't figure out why it kept on leaking. Now just yesterday a friend gave me his protank 2 and Im guessing it was because he was tired of it leaking. When I first took it apart I took all the pieces off and connected them all again one by one making sure it was air tight as I added each piece. Everything was air tight until I got to the coil. I was taking a drag off it and it immediately started leaking and I was like why the heck does it do that? I noticed that it was leaking from between the coil and atomizer where the two little airholes are. What I did to fix this was take an old coil and gently pull off the little silicone ring (above where it says the ohms and below the wick) then I dropped it into where the coil meets the atomizer. After I just screwed in my coil and it works perfectly. No leaking whats so ever! Very good cloud production so far I recommend trying this if you have one. Sorry if someone already wrote this but I did a lot of looking around and never found an answer. Also didnt know where to post this so I apologize if this is the wrong section.