I bought a vivi nova. I love how it doesn't leak and its mess free when filling. The major problem I am having with it is flavor. It is extremely muted and slightly burnt aftertaste. I have been dripping this ejuice and love it. It tastes just ok in the nova. I was hoping someone had a trick to get it to taste like dripping and the carto tanks. I am using the 2.8 ohm head at 4.7 volts. Any pointers? Or should I just go back to the carto tanks?