I have a new istick 30w that I use with a smok micro adc2. I've used it with a new 2 ohm coil at 8 watts and is great. I changed to a used coil I had cleaned and things got weird. It's a 2 ohm coil and the istick is reading it at 4.9! At 8 watts the throat hit was too much so I went down to 6 watts. According to the manual the istick doesn't even fire to 4.9 ohms. So let's see what you got?