How do you know when your atty has gone bad? I got two with my Joye 510, but after the 2nd day I had lost one. So, I've only been using one and then also a cartomizer. It's only been about 3 weeks sense I've started vapeing and tonight when using my atty, it's starting to burn my throat. I keep adding liquid, but it's not really helping. Any suggestions..other than buying more attys which I know I need to do anyway. But, I just want to know, how you know when you should toss them?