Okay good to know. I'm pretty pumped to start learning it. I like on demand the wife is learning how to manage, she's got baby lungs and when it's not heat soaked she struggles a bit.The base is 22MM but the steel sleeve fits over it making it over 22MM by quite a bit.
Just a heads up as some mods like the pico 75 watt units won't fit unless you use two heatsinks to raise it up.
I only use wattage mode and kanthal wire.
You can use different wire and tcr\cruise mode but I haven't fucked with that too much.