Im having trouble with leaking on my Kayfun Lite. It only happens when I refill. The threads on my fill hole have been stripped off so I dont fill from the bottom anymore. I remove my topcap and fill from there. I cover the air hole before i fill it up and replace the topcap and screw it a bit then flip it upside down. The second I let go of the air hole I get maybe 5-6 drops of juice leakin from the drip tip. Not sure why it leaks. I have a Kayfun 3.1 as well and fill it up the same way but that doesnt leak, only the Kayfun Lite. Need some advice on how I can fix this issue or if im doing anything wrong. Also I cant fill it up more than 3/4 of the tank full. Even when I filled it up from the bottom fill hole, it would leak after I flip it back upright. It seems to settle at around a little more than half the tank. Any tips or advice would be great help.