I have an istick 30 watt and am using a subtank nano with a 0.5 coil. I bought both at the same time and I've had them for about 2 months. Everything was working fine until 2 weeks ago. I turned it on one day and when I fired it I got a scorch. It seemed odd because I always have my v/w locked. I noticed that the ohm reading had jumped up to 1.5. I unscrewed the tank and then put it back on and got a reading of 0.8. I took a couple hits and everything seemed fine, but then Ohms jumped again. If I touch the tank at all the ohms jump around between 0.6 and 2.1. I've taken the tank apart and cleaned it. I cleaned all the contact points and made sure that the spring connection on the istick hadn't been pushed down. No luck. Ohms are still jumping. Anyone know what might be wrong?