I lost one 801 Addy right out of the box, hit a few times and died. Wrote that one off as a bad atty. Had two others go bad after I tried to "fix" them when they weren't vaping good. Tried Vodka soak, Coke soak, wash out with water dried them got them good and wicked and they both had a slow death. Now I vape on two attys while two others are draining on a paper towel for a day. Blow them out and use them while the last two I was using drain. Don't do more than give them a day to drain, blow them out and use them. Haven't lost one since I've been doing this. I'm sure eventually they will burn out, but I'm getting good mileage out of them with this system. Remember all attys weren't created equal.