I don't have the T-Priv, but have a few other Smok mods. But if the T-Priv is like the others, something that may be helpful to you and
@Coyote628 ......
Whenever the mod is turned on without an atty attached, when screwing on the atty (at room temp), it will ask if it is a "new coil" to which I respond with a "Y" whether it is "new" or not. If I have been using the mod and change tanks, I remove the old tank, set the wattage for the new tank, press the fire bar, then screw on the new tank resulting in the questions coming up. I can't say if doing this is necessary or beneficial, just what I have gotten in the habit of doing. Never really paid attention to or cared what the ohm readings show, just always gives me my satisfying vape.