Just got my Joye 510 the other day. I'm loving the first drags off it - then... after what doesn't seem like a long time - my cart seems to dry up and I'm left smoking plastic. I got it Thursday night, I am a LIGHT smoker, the cartridges they came with lasted approximately 20-30 drags at most (and I'm a three second dragger... definitely nothing more). By Friday on the way home from work I was already on my third cart (and I do NOT sit at the desk puffing away all day). Is this amount of time expected for the 510 carts? Did I just get faulty carts? Do I have faulty atomizers? Any help or direction would be much appreciated!