I just got an IPV3 and I love it, however I notice when I go to fire it, the ohms and voltage change either up or down say for example the voltage goes from 4.18 to 4.08 and the ohms go from .44 to .42 to .39. Is this normal on the IPV3 or is there an issue with mine. I use song vtc4s and I did the firmware update the other night when I got home with it. I was also confused because the specs for it says that it goes from 1 volt to 7 volts, however mine reads 8 volts or a little over when i get to 100 watts and above ( not vaping just testing to see what the voltage would change to) any advice would be greatly appreciated.