When the ZMax displays 0.0o it is a short. It means 0 ohms (which is a short). If it is open it displays 9.9o for too high a resistance.
I know that but the funny thing is that it shows this with EVERY atomizer I put on. So none of them is working while they do great job on other mods like my ProVari. They are not screwed in too tight either...
Anyhow I sent it back for repair, will see what was the issue.
A friend of mine had firing issues - it started to fire randomly without pushing the button and on maximum output of the stacked battery killing the cartomizer. His is also back for repair...