I have a lavatube v2 with a vivi nova that has a 2.8 ohm wick. The last wick burned up after only vaping 7ml of fluid. I did not actually burn up, but that is when it started tasting burnt which is when I change them. The wick is slightly colored but not brown. Is this normal? Would constantly keeping my vivi nova full help make the wick last longer/ is letting the fluid get low bad? I usually vape between 4.7 and 5.1 volts.