Yeah, I wasn't sure how you were fitting more in! But at least yours doesn't leak with the top fill - it's a pita to fill up...
I figured out why was I wrong telling you that I was able to load 4 ML in my modified Fogger V4.3
You see, I only sealed AFC but not the Drip Tip well at that time. And when I pushed 4.0 ML of juice down into the tank, some of it went up the juice channels into the chamber. But because I use so much cotton, it got absorbed by it and that's why I didn't have any leaks. So in the way it did take 4 ML, but the Tank only holds 3 ML. What I am trying to say here that I'm not a liar in case if somebody might have thought I was.