I'm running the Aspire nautilus Mini on an Eleaf istick. I run 50/50 juice at 9.5 watts on the vw setting which comes out to 4.2 volts. My question is why is the istick showing 1.9 ohms since this is a 1.8 ohm coil? It has been showing 1.9 ohms since day one. Both the Nautilus Mini and istick are brand new and I've only had them for 5 days. Is this just an insignificant variation in coils or is something wrong?