An answer you will hear alot--but the dry hit is prolly from a hot spot.
I personally am using 200 superfine mesh.
Wick--have had great results with a solid tightly rolled wick, with just a pinhole down the center. There is a tutorial for NextGen and Sat22--i think the gentleman is Korean. He doesn't talk. He cuts out a wide but not tall rectangle out corner of mesh. Rolls from short side to long side, so it looks like there is a 'peg' on the end sticking in the
tank of
juice. I think this achieves the same effect as cutting the
juice end at a 45 degree angle. If anything--i now get overwicking.
As far as the coil goes--however you wrap it--on the atty, off the atty, petar k--etc--not too tight. But def not too loose. Pulse out on low voltage or on a mechanical mod with a weak battery. Get your coil to light up perfect. Switch to higher voltage or fresh batteries. New shorts will creep up. That's ok, that is the point. Pulse it out, adjust the loops.
I have two thoughts. The reason why there always seems to be a hotleg at the top--is because your coil wrapping and installation is going nice and smooth--and then you have to jam tension nuts together. So--two pairs of needlenose pliers. Practice being able to jam them without having to struggle at it. I have DiDs and AgaT+, and a bunch of other cheep genny clones. I don't think that the hotleg has to do with distance from the center post to the wick. I was getting hotleg w the DiD as well--because it is so difficult to lock the jam nuts together at the pos pin.
Lastly--don't build too low ohmwise for your genny. If you are gurgling--prolly too high of ohms. But if your wick dries out too fast, but no hotspots--either add a wrap or go higher gauge wire.
Watch tutorials. Good Luck