thanks for the quick respond. Ive replaced the atomizer head and still get the old flavour. The problem is that i tried refilling the tank with a new flavour which I thought it was ready, but it tasted like alcohol (I forgot to breathe the e liquid). I let it all night open (aprox 12 hours of breathing) the liquid smells much better now. Still cant remove the smell from the tank. The atomizer, airflow control and drip tip are clean, but the tank still has a smell of a e juice which was not correctly breath. Sorry if its confusing, engilsh is not my first language. I have around 1 month vaping. 8 years of analog and i do not want to go back.