Hey this is my first post so hopefully I'm not repeating anything already answered although I've looked around and haven't seen this particular problem.
First off I've noticed that no matter which resistance head I'm using for my Vivi Nova it's always a bit off (1.8ohm is reading as 2.1ohm) I'm not sure if this is a problem with the PV or a Vivi specific issue. Because of this I don't know what the real resistance is so I always vape at a slightly lower voltage just to be safe (Usually around 3.5-3.7 volts). If anyone could tell me if thats a fair approximation that would be great, I usually just adjust until I find a good taste.
Which brings me to my second issue. I find whenever I use a brand new head I get great taste and vapor production for the first hour or so and then it starts to drop off, and quickly switches to a very burnt aftertaste. Within a day or 2 it's not just an aftertaste but an all around burnt taste, even as I drop the voltage down. I'm usually down to 3 volts by the second day just to keep the burnt flavor away. I realize that eventually this is a normal thing to happen, I just wouldn't expect it after a day or two. This is my first Vivi Nova tank and I'm still using the packaged replacement heads (Since I quickly got turned off of it and switched to an old tank I had).
I don't know if this is a problem with my PV (About 6 months old, and yes it is on no.2 mode (Although it has a tendency to randomly switch itself to no.1)) or Vivi Nova in general. I've heard great things about Vivi but I'm just not experiencing it. I'm wondering if I should be patient and give it a try or switch to a different tank, I just haven't found one I really like yet.

If anyone has had similar problems or knows whats going on please reply and fill me in!
Also if you have suggestions for other tanks that work well with this unit please let me know!
First off I've noticed that no matter which resistance head I'm using for my Vivi Nova it's always a bit off (1.8ohm is reading as 2.1ohm) I'm not sure if this is a problem with the PV or a Vivi specific issue. Because of this I don't know what the real resistance is so I always vape at a slightly lower voltage just to be safe (Usually around 3.5-3.7 volts). If anyone could tell me if thats a fair approximation that would be great, I usually just adjust until I find a good taste.
Which brings me to my second issue. I find whenever I use a brand new head I get great taste and vapor production for the first hour or so and then it starts to drop off, and quickly switches to a very burnt aftertaste. Within a day or 2 it's not just an aftertaste but an all around burnt taste, even as I drop the voltage down. I'm usually down to 3 volts by the second day just to keep the burnt flavor away. I realize that eventually this is a normal thing to happen, I just wouldn't expect it after a day or two. This is my first Vivi Nova tank and I'm still using the packaged replacement heads (Since I quickly got turned off of it and switched to an old tank I had).
I don't know if this is a problem with my PV (About 6 months old, and yes it is on no.2 mode (Although it has a tendency to randomly switch itself to no.1)) or Vivi Nova in general. I've heard great things about Vivi but I'm just not experiencing it. I'm wondering if I should be patient and give it a try or switch to a different tank, I just haven't found one I really like yet.

If anyone has had similar problems or knows whats going on please reply and fill me in!
Also if you have suggestions for other tanks that work well with this unit please let me know!