My Russian 91%V2 seems to have calmed down a bit. Remembered last night that it had air flow adjustment capability so I played with that feature on and off. The airflow does make a big difference in the draw and the taste. Taste, not so much with little adjustments, but pretty decent difference with a larger airflow adjustment, at least for this one juice.
It is holding steady at 1.4ohms on my Provari mini and the ohms meter. On the MVP2 it is jumping all over the place. But I think I noticed a pattern. When the r91 is just put on the MVP2 it has a very high reading, in the 4.5ish range. After I take a couple of puffs off it, the reading goes down about .5 ohm. As I keep puffing and vaping, after about 8 or so puffs, it gets down to 1.4ohms and stays there a bit. If I stop vaping and try it again after a 1/2 hour or so the whole jumping ohms business starts all over again. Does it only on MVP2 right now, and it does not make a difference if I use a 510to510 adapter or not. Trying all kinds of combinations. On the Provari it seems to be holding its own.