it won't work above above 5.6 on the core, or with fully charged 18350 AW IMR x2, but works ok with single 18650... I haven't tried lightsabre mode, guess I will try that
EDIT: It worked for one glorious puff in lightsabre mode, but now is back to red flashing
Do this, unscrew the kiss Ac press the button and screw it in, once the ti glows for a second or two it should be good to go.