Guys I am experiencing a problem I have not seen anyone else post about. I bought my first bellus and really liked the flavor, so I ordered 3 more. I had some flooding issues with my first one, but figured I would get the wicking right so went ahead and ordered the 3 extra. I have as of yet gotten the wicking correct, or so I thought. This is a 3 or 4 month project since I started. I looked at every you tube video on the bellus, tried every wicking solution I saw and read most of the forums and looked at the pictures. Tried every wicking solution that is possible with this tank I believe. I run 2.5mm coil at .5 ohms and vape around 25 watts. I have put cotton only in the top shelf, I have had little wisp of cotton coming below the top shelf, I have just had cotton on the top deck, I have used more cotton, then tried using less cotton. Finally it hit me. All the tutorials I have watched have all been using dual coils. I prefer a single coil for the extra battery life and usually I don't notice that much of a flavor difference. When I tried the dual coil I have not had a issue. No leaking and no dry hits. When I go back to the adapter it either floods and looses about a .5 ml of juice, or I get dry hits. I have a goliath v2 and basically the adaper is the same, but have no issues with that tank using a single coil. I have numerous tanks, the serpent, goliath v2, lemo v2, Kanger sub ohn, crown, and rebuild them all. I have never had this much trouble wicking a tank. All 4 of my bellus do this. I have looked at the adapter and cannot figure out what is going on. Wondering if anyone else has experienced this? I think it is just a design issue as all my bellus tanks are like this. IF anyone knows a solution to this I would greatly appreciate it.