Well, I don't think it was 'user error'. I installed fat cotton wicks, thin cotton wicks, long cotton wicks, short cotton wicks and a silica wick. Watched 10 different build videos. Filled it from the fill screw and from the top cap. Used 100% thick VG and thin PG. All O-rings were checked for damage. No cracks in the tank.
I think part of the problem with that Kayfun Lite clone was that it was machined with (4) four separate and very deep juice channels.
Here is a photo of the base (minus the wick) ...
BTW ... These are
my photos ... not something I just pulled off the internet
Notice the highly machined quality threads on the base:
That's not a KFL clone, incidently, it's a clone of a new thing similar, with 4 juice channels, which the KFL doesn't have.
At least the clone of a KFL I got today doesn't. It's vaping like a chimney, with no leaks, replacement joints + screwdriver for filling from the base (haven't tried that, yet

). No complaints and it cost me 22$ postage included.
I'm happy with it, and THAT'S what counts for me. And that my bank is still letting me use my bank card.
So, that's where I am, although I'll write a more detailed description elsewhere, and later, when I have more time.
The device you have in photo is known as an Aqua, and, due to the 4 juice channels, double coil, and other difficulties in the setup, I was advised to get a KFL or Russian (I've got the KFL clone, and I'm waiting on the Russian...). It's true that it's well made, but 4 channels and 2 coils is quite a thing to get set up without leaks, and vaping well.
Good luck to you. Apparantly they're a super vape, once setup

I'll stay on my single coil devices, until maybe, I'm an expert coil maker of this style. But I'm not really into double coils. One coil's enough for me, thanks. I find doubles a bit too much for my delicate lungs...
Sorry, just saw crxss's post, where he already said that it's an Aqua clone...

Yes, I agree about split or double wicking, to go down the 4 channels. Don't they usually have 2 minus posts for a dual coil set up? Or is that in my dreams...yes, as the one I looked at was single coil, with 4 separate wicks, no double coil
