I threw in one build into the KM3 when I first got it, a 26ga kanthal spaced 2.4mm coil, .88 ohms, and I've been running it with the airflow screw removed at 20 watts. I've gone through 9 tanks of juice, rewicked 5 times, and it's been 4 days.
No leaks, gurgles, shorts, spitback, "check atomizer" warnings, if fact I only had one dry hit, and that was due to me not opening the juice control after a re-fill... Oops...
This tank has been wonderful, no issues, taste with the build I have is a full, "wet," vape, and refilling couldn't be easier.
I'm over the moon with the Mini V3, and truly only expect one issue: breaking the tank. I'm very careful with all my vape gear, and actually haven't broke any tanks in 2+ yrs (knock on wood,) but I'll definitely be picking up a bell cap and/or spare glass sooner than later.