Reporting back in a FINAL time, I fixed the leaking by realizing me blowing into the tank before every hit to clear it along with me fidgeting with the AFC ring all the time caused juice to be slowly pushed out from the gap over a few hours. When I stopped doing these things, the mod has been dry under the tank after removal ever since. I LOVE this thing more than anything and its the pinnacle of everything I love about vaping. Its for people who like huge builds, tons of airflow and high wattage. I plan on ordering the 41mm Modfather RTA when it comes in stock but I already know I won't like it as much due to it having a smaller deck with different style posts, having less airflow, less convenient filling and being a bit ugly in my opinion. Though I'm sure it'll be a CLOSE second favorite to the DT and have a better build quality, I just cannot see it or ANYTHING beating this tank for me.
It's a shame the 30mm has so many issues, but if the DT only came in 30mm I probably would've never bought it, the 40mm size, huge capacity, gorgeous looks and massive amount of airflow along with the titantic sized deck were what drew me in, the 30mm wasn't even something I considered ordering before I read about all the leaking issues.
If you have a mod you can fit this thing on without it looking ridiculous and you like big ass builds that take high wattage, I say give this thing a chance. You may think a tank like this could never be something you used all the time, but once you see how it performs and feel how FUN it is to vape, I think you may just change your mind. This is the first vape product I can comfortably give a 10/10 and for me that's saying a lot. Vapergate, you really did make the perfect tank, at least for me.