I've been vaping for about 4 months so when I first started I started with a protank, not a cartomizer. I have some extra cartomizers I'd like to use but I'm having trouble filling them. I've tried two different methods to fill them up, one filling up the longer condom thingy on the carto with 25-30 drops and pushing the carto down into it, and the other just putting like 30 drops around the edges of the carto not getting liquid in the middle. When I blow out the liquid that gets in the middle using the condom method it seems like I blow all the juice out of the carto. Anyways either way I do it its like I have to add several drops after every few hits or else it starts burning my throat. What am I doing wrong? Thank you!