You unscrew the upper portion put your finger over air hole,you can fill most of the way now just start to screw top part back on with finger still over air hole turn it upside down and finish screwing in the top cap I never get floods super easy!
How do you screw the top cap upside down? i tried but can't seem to do it with a finger over the airhole. can someone post a video of their fill method? I recently got hold of a kayfun 3.1es and love the vape but hate all the leaks and flooding I'm getting. Someone please help!