Hi guys! I bought an M401 a few weeks ago and it arrived yesterday. I was very, very excited and I started using it right away, it was great apart from the occasional drops of juice I accidentally pulled back into my mouth (p.s. I'm using pre-filled carts that came with the kit). After a few hours of probably heavy use, it stopped working. Completely. I assumed the batteries were both just dead (even though the LED was still lighting up) and just resolved to charge them overnight. I did that... woke up this morning and tried to puff away - got one good drag, then less vapor, and less, and then nothing. The atomizer wasn't even heating up (I did notice the atomizer becoming really hot last night) and I was just getting nothing. Needless to say, I'm a little disenheartened right now and pretty disappointed. I don't have any juice yet, so I can't drip onto the atomizer, and it seems like the atomizer keeps getting clogged with water or juice even though no vapour is being produced. What should I do? I want to make sure I can resolve the issue before I email the supplier.