My brand new Hcigar VT75 has stopped working. I have only had it for three days. Yesterday I started getting wild swings in reported ohms. I made sure that the screw on the battery cap was tight. It seemed a little loose and after I tightened it things seemed to settle down. Today it started happening again, then I got a weak battery error, then check atomiser error, then a short error and now it won't even power up. I have changed batteries, made sure the coils were not shorting and tried different attys with no luck. I checked all of those things when I first started getting the wild ohm swings. I really like this mod. I am sad.