Yeah adding more wick helped with the leaking, I have no idea why the Cana isn't firing though. It will fire on all of my other mods but reads CHECK ATOMIZER on the Cana. My istick has a deeper 510 connection well and it's working on that so I think the pin is far enough to reach the Cana...but adjusting the 510 has been quite difficult.
I have this issue with an Orchid on my IPV2 as well and have yet to figure it out...
Does your Lemo fire on other units? Sorry if I missed the answer in a prior post.