I've been having some strange ohm readings on my SVD as of late. Before firing the device, I get very high ohm readings (4.0+) After a couple of fires, the ohms will settle down to the correct resistance. I use a combination of LR cartomizers and rebuildables (drippers w/ microcoils / std coils and recoiled evod heads), all should be around 1.5 to 2.2 ohms. This occurs the most on my microcoil builds. Thoughts?