I am using a supermini and I have 15 cartridges. I used the first 10 up pretty quick, and tried refilling them with some juice but I just can't seem to get it right. If I don't add enough then I only get a few good puffs off of them, then I get a bad burnt taste. If I add too much they gurgle, don't produce any vapor, and I end up sucking up a big mouthful of juice (YUCK!!!). After fumbling around with refilling these for the past few days with little success, I opened up my last 5 carts and wow what a difference, they taste awesome and lasted so much longer. So I dissected a few to find that the plastic drip cup inside had melted to the bottom of the batting (still don't have my technique mastered, sucked them dry a few too many times I guess, lol), so I did some mods on them, pulled out the plastic cups and took the batting from the carts, trimmed off the melted plastic, and shoved 2 pieces into one cart without the drip cup. A little bit of improvement but still nothing like I was getting from the ones fresh out of the packaging. So....what am I doing wrong? Is it possible that the juice is to blame (it came with the PV, tobacco flavor 18 mg)? I have looked into the teabag mod but they didn't have any at the local store, so now because of the holiday I won't be able to pick any up for a couple days, but I will definately be trying it. In the mean time I need my juice to last me until my next shipment arrives (hopefully wednesday) and I think I have been wasting quite a bit trying to figure this all out. A week ago I smoked about 15 analogs a day, but I seem to be going through this juice like a 2-pack a day smoker would!! How long on average should 30mL (i think that is how much I got??) last? HELP!! Also I have a spare atomizer that gives everything a burnt taste, but I have only used it a few times??? Does it need to be cleaned already or did I wreck it or something?