I just received the V5 and am loving it, but I have some questions. Right now I'm running a Protank II and the Vamo is telling me the output is 2.3 ohms. A friend suggested for me to try the settings at 9 watts, but the juice is tasting burnt. I have it set at 3.4 volts and it's very nice. Should I change the heating element to a 1.8? Is running it at 3.4 volts typical? It seems pretty low.