I just started vaping and on my initial vape I used 4 drops and it seemed to create a decent amount of vapor but I kindof noticed it leaking out the sides in between where the cart connects with the atomizer. So I have 2 questions, how many drops should I be putting in the cart (510 PV) and also, is there a technique that is used to get the liquid into the cart so it doesn't leak out? Thanks so much!