Sub ohm tank question. Please help!!!

[FundamentalForce]

I'm not an inexperienced vapor but I'm loosing my mind and my patience with sub ohm tanks. For some reason the resistance jumps around on them by as much as .8 ohms for no reason. I've used 5 different models, 3 mods and different juices. I've thought of half a dozen variables and nothing works. I won't list them all as that would be tedious. I've also inquired at the two vape shops I frequent. They don't seem to understand what I'm asking. This phenomenon is driving me crazy as I jump from a good vape to dry hit or burning liquid in my mouth. Sometimes this goes a day without happening but then comes back. Please, any help would be greatly appreciated!!!

 

[DazAdams]

I've found that happening to me a bit lately then realised that my rda was slightly loose on the mod. Gently tightened then no problems. Might not help, just my experience. Good luck.