2 days on an ego - ordered couple lava tubes - tried Kanger tanks good wanted better.
Tried Mech./rebuild had to have one - first try Kyfun with .67 ohm coil natural cotton self wound and wicked.
No leaks and burns awesome.
2 more Kyfuns and a AGA coming with another mod.
Span 1 month - went from 3+pks/day to 0 in 4 days.