I like the tank on tight. Finding the same thing as eyeball. Not very consistent. Seems to be a lot of variables involved. Squished o-ring, type and method of wicking, coil build, thickness of juice. My last build was with nichrome instead of kanthal (I don't know if this is making a difference - it's a larger, loose coil with 7 wraps & settled to .6 ohms), lots of Japanese cotton and poking a path through the cotton to the air hole. I run a thicker juice. So far so good. A little bit of popping.
I really like the Lemo 2 though. Great taste & air flow. Can't beat the convenience of the side fill hole. The deck is easy to build on.
Hows the extra grooves on the atomizer tube working out for you shaunhoop1981? I'ld love an update on that. Any regrets? I'm really considering doing the same.