Hi, thanks a million I didn't get it what to do when you said up and then down but I got it yesterday and it's really working much better it's best around 19.5W. And I was vaping very wrong, so I was inhaling very fast and short like smoking cigarettes and actually I have to inhale slow and long so I get much more vapor, it works great now And I got a chewing gum yesterday and today and the metallic taste is gone and the throat is better since I started vaping popularly so I hope it will work good from now. Thanks for the advises!