Just got it today... been vaping with a nautilus on an IStick 30.. It was great but I wanted more flavor and cloud. Went to my local B&M shop he taught me how to make a dual coil with 26ga Kanthar and wraped 10 times. First hits were great about .7-1.0 ohms (keeps changing) How often do I change the cotton? It's already kinda brown. I want to change flavors do I need to change cotton. Thanks for any advice.. very new but haven't smoked a ciggy for a couple of months!!!