I've been using the Joye 510 since I started vaping 10/18/2009. Up until now I have really been enjoying it but lately I'm having troubles. Here and there I have bought new batteries and attys. I think I have 7 batteries and 5 attys total. The attys all seem so different from each other. One is really hard to draw on but gives good vapor one is hard to draw and doesn't give much vapor the others draw very lightly and sometimes seems to hit well other times not. Everything looks the same so it's hard to tell which came with what order. I think some of the attys and batteries are genuine Joye and others are clones. Some of the batteries seem to last longer and some shorter, some the lights doesn't work anymore but the battery still delivers good power etc. All of the attys seem to be giving an off taste lately even after cleaning. I guess what I'm saying is that everything seems very inexact and confusing with the 510 now. How do you use yours? Do you keep everything labeled and separate? Do you throw away batteries and attys that seem to be fading or just keep soldiering on with this stuff until it doesn't work at all? Is there a better system/solution? Thank you for any input, it scares me that lately I've been thinking it might just be easier to pick up some analogs.