Mine does not leak and I deliberately placed cotton in the center, I filled it right up, above the top of the coils with wick. I think you're not using enough wick, and that's why you have leaking. If you use the blue screwdriver you can use 22AWG wire, if you limit yourself to 6 wraps per coil.
My Magma V2 is a 4 post design, makes no detectable sound when vaping and is really very good. It has a lot of similarities to the Geyser, they even thread together, literally. Maybe I have the clone and maybe it's better than the original?
I was just about to tear my second build apart, and as I was looking down inside the 4 coils I had an epiphany - if I take a length of wick and gently press it between all 4 coils, can I drip to that and will it feed the rest of the wick, and the answer is YES. So I can drip my wonky coils from the centre. :)
Oh you did make a build on it. I copied my build on the Geyser, but because there's more room to play with I didn't cut the coil legs before I set them, which was a big mistake. Once I got to build 2 I set the adjacent coils first, coils at right angles. Then set the next two opposite, then tightened the two remaining screws.