with a straw wick you will get explosions, so some people will pinch the top of wick. i always made a solid wick so i am not really sure how this particular wick will perform. if you pinch wick then you can open fill screw if needed. also 2.8 to 3.0 is kind of high for genesis atomizers. high ohms equals high voltages and thin wire which is not optimum imo with genesis atomizers. a thicker wire will produce a better flavor then a thinner wire. so if your still not happy i would reccomend 30g wire, and resistances between 1.5 to 2.0 ohms. if in the future you find that you prefer the lower resistances you can even go lower then 1.5, but for now like i said try to stay between 1.5 to 2. in genesis devices you really dont need to produce a lot of volts to get a great vape. lets say you have a 3 ohm coil and you zap it to 6 volts, this will equal about 12 watts of power. now lets say you have a 1.6 ohm coil, you can vape this at 4.5volts to achieve the same wattage of 12 watts. so both examples equal the same watts, but the 1.6 ohm coil is using less volts, which to me is better tasting, also you can use a thicker wire for the 1.6Ω coil which will produce a better flavor as well. anyways good luck, and this rebuilding thing just takes time and lots of practice, also a lot of experimenting to find whats best for you.