That's been my experience, too. TC has been hit or miss, with some devices having trouble detecting the proper setup (and changing manual settings upon the next draw... ). That was not a Smoant product, though....@CountBoredom I agree, I would love to see a return to yesteryear with a 100 to 200 watt mod that is vv/vw as I don't use TC. It's just not my thing. Tried it and didn't care for it, but I realize a lot of people do. I know they did a VV version with the Charon 218, but I love my wattage power mode vw for me.