I just got a 401 last week...everything working good so far. Today I got some Kick juice (medium) in vanilla. I decided to try and drip after watching videos and reading tons. So I do the drip (three drops) and now I am getting no vapor at all. I am drawing hard, the light on the end lights up so don't think its a battery issue. Also, I now notice the atomizer is getting pretty warm when I draw on it through a cart. Didn't do that with the carts that came with the 401. Am I doing something or did I do something wrong? Thanks for any help....Bob