My 2 subvod batteries actually fire a .3 ohm coil from mistic/haus e cigs.The manual states subvod battery can only fire down to .4 ohms. Why is the low resistance feature not kicking in and stopping the batteries from firing? Kit was authentic i checked. My subox reads the coil at exactly .3 ohms. Maybe the coil isn't really .3 ohms idk any thoughts?