So I bought a Vivi Nova tank at a local shop a few weeks ago, however I have been plagued with burnt taste when I am using it. I first thought I had a bad head on it so I replaced it with another one that was provided, same issue with it so again I replaced it with the last head it came with it and still same problem. I have noticed that the Nova had issues with previous versions so I wanted to know how to tell what version I have. I also noticed from pics of other people theirs had Vivi Nova written on it an mine does not. Mine has the long wicks, came with a metal drip tip and holds 2.8mil of liquid.