I have a Provari 2.5 and an Aspire nautilus tank. I'm using a 1.8 ohm dual coil and vaping at 3.5 volts. I seem to burn out a coil in about three days, but was under the impression they'd last longer than that. Is my voltage too low and I'm flooding the coil? This is the only thing I can think of. At any rate, it's better than my old MVP, Protank 2 rig-that would only last 2 days. Any help would be appreciated!