Ok so I've had my kayfun lite clone that I picked up at my local B&M for about a week now. At first I wasn't impressed. I couldn't get it to stop leaking, and when I finally did, the draw was way too tight. I went out & got a Ming drip tip & built a .8 ohm coil in there. Now it hits beautifully & produces great flavor with decent clouds. My only gripe now is that I have yet to figure out how to fill it with NO LEAKING AT ALL. I've lucked out a few times but for the most part it always leaks. Sometimes more than others. I've tried both top & bottom filling. Is there supposed to be a o ring around the bottom fill screw? I'm wondering because even when I get it to not leak from the air hole, I'll take the kayfun off my mod & juice is all over my top cap & on the bottom of the kayfun. Any suggestions? I really like my kayfun but I hate wasting juice every time in use it. Anyone else have these issues with the kayfun lite?