I got my first rebuildable - Berserker 1.5 mtl rta and am having trouble wicking it properly. The cotton is either too thin and it leaks and gurgles or too thick and I'm getting weak flavor and dry hits. I watched some YouTube videos about building very closely and try to have minimal resistance when I pull the cotton through and even then I have to take primer puffs every few drags to avoid dry hits. Any guidance is greatly appreciated. I'm using the super fine mtl fused Clapton that came with the tank, which my device reads as .68 ohms. I've tried 80% vg and 70% vg liquids and Cotton Bacon Prime and cotton pads. I usually keep my watts between 17 and 21. I dry-burn the coil and saturate the cotton before filling the tank and I can see the cotton sticking out of the bottom of the ports. In the pic below, I think the cotton is a bit too tight. The liquid doesn't seem to feed into the cotton enough and I have the other problems I mentioned above. Thanks in advance!