The vivi nova have some design flaws that are easy to over come. You likely have wicks that are long, extending to the bottom of the clearo, this is fine if you bend your hear over, looking at the ground to vape (don't do it while driving...

) Shorten the wicks so that they extend just a bit longer than the tank is wide, when you tip your PV up to take a vape, they will have enough juice.
Also take a pin and unravel, fluff up the wicks. The juice can get to the coil easier if the wick is not a solid mass, if you can pull the wick so some of the unraveled section in in the coil, even better. And when you refill them, pull up the little silicone tube a short way and let the top cover position it when you screw the top on, it will keep the wick from being pinched off.
As you are using VV, keep the voltage low, just enough to give yourself a nice thick vapor. Top coils seem to like lower wattage than bottom coils, or RBA's yet still have a nice warm vape.
I would recommend getting some wick and wire, my best heads and my home built. It's quick and easy to do, I can do it with eyesight bad enough to barely see the wire and hands that have a bit of a shake....
With a slight bit of fiddling, I've been using three vivi's for over a year, no leaks, great flavor and vapor, simple to fill, clean, and very cheap to maintain...
