I have the nickel coil in my kangertech subvod mega tc and when I tap the power button 3 times to go into tc mode, it works. Then when I take a hit nothing happens, no smoke, no sound, nothing, but the green light comes on like it's working, but no smoke or anything. I can switch to fire mode and it will work with nickel coil and I have smoke, but in the tc mode (green light) I get nothing. But the funny thing is the odd time it sometimes will work in tc mode, but it's not a cool sensation, it's actually hot or warm like its in fire mode, but the green light is on. I can't get an exact time or pattern when it will work or not work. But majority of the time in tc mode it will not work. Can anybody help me with this please as I have no idea whats going on.