My npro leaks out the end when I draw sometimes from prefilled carts, I mean the carts that I bought already filled, however you say it. Anyway, it burns my lip a tad when it happens and definitely don't taste good. Is there someway to keep this from happening? Seems I'm forever blowing out the atomizer too. Especially with a new cart. I just hate to keep getting the stuff on my lips and fingers. I hold the ecig at a slant downwards but it still happens. I've noticed it a bit from my penstyle also. any advice? Thanks so much.