Jdilius, I have been with the nova since version one. As much as we would all like things to be " plug and play", they arent. Vivi's just like most other PV equipment will sometimes need tinkering. There ARE right and wrong ways to use EVERYTHING.
All we can do is try to help you. I myself have used all the atty heads in a variety of ohms and 3.7v on a 2.8ohm head with a vmax is too high. Also the coils do sometimes need to be adjusted. I leave all my wicks long, and use 100% vg juice and havent had one issue with a vivi head since ver2.5. I simply run 3.2ohm heads now.
You can try what I posted or just discard it as it seems you have, Its up to you. Good luck.
All we can do is try to help you. I myself have used all the atty heads in a variety of ohms and 3.7v on a 2.8ohm head with a vmax is too high. Also the coils do sometimes need to be adjusted. I leave all my wicks long, and use 100% vg juice and havent had one issue with a vivi head since ver2.5. I simply run 3.2ohm heads now.
You can try what I posted or just discard it as it seems you have, Its up to you. Good luck.