I didn't lose even 1ml. I had mine upside down with the airflow ring wide open, but only a little liquid came out of the mouthpiece. It was just enough to make a nickel-sized stain on two layers of vaper towels.
But it's always a good idea to step away from a frustrating project and give it a fresh start after a day or two. I was pretty furious with the Fogger until I did this build. Now I'm considering getting a second one next month, or maybe wait for a V3 or whatever.
All that said, it's still not
quite as good as my RSST or AGA-T2. I guess I'm just a genesis "guy."

Could be that I'm just more experienced with those as opposed to these.....ProTanks on 'roids. I just got an Ithaka clone and haven't even had the time/nerve to take it apart, inspect (and probably trash) the "factory" setup and do my own. I've got a nice collection of how-to vids assembled though. That's my project for tomorrow.
well on a second fill it seemed to flood again. unless minor flooding is code for losing a ml of liquid then I'm at a loss. putting it away for the night. hope to get it to work tomorrow