To start off, let me list the vapes I have. I have the Kangertech Dripbox 160 kit, the Eleaf Ijust S kit, then a separate RDTA known as the Tobeco Big Dripper v1, and a separate mechanical box mod known as the Dovpo GX200. I have had the Dripbox 160 for a while now, and I wanted to get a tank again. So I bought the Eleaf Ijust S a few days ago, and I have been very happy with the results. I wasn't having any problem with any of my vapes until today. So, last night, I went to a local vape shop and bought the Tobeco Big Dripper v1, I had to put in my own coil, it went well, just a little bit of struggle because the build deck is small, but nevertheless, I still got it working. It was working very well, I have been using it on the battery for my Ijust S, it went well until this morning. I had my Ijust S tank on its battery, but I decided to switch to the Big Dripper again, I put the Big Dripper on as usual, it was working for like 1 or 2 hits, then it stopped. I think it shorted out or something, because the light on the Ijust S is indicating a short circuit, so I tried the Big Dripper on my mech box, the Dovpo GX200, and it worked for 1 hit, then cut out again, then I put the Big Dripper on the Dripbox 160 mod and it was giving me the check atomizer warning, so I figured something is just wrong with the Big Dripper. So I put my Ijust S tank back onto the Ijust S mod, and it was still giving me the short circuit warning, although it was a different tank overall. So I then tried the same tank on my other 2 mods and it worked just fine. I then put the Dripbox 160 RDA on my Ijust S mod, still gave me the short circuit warning, I tried it on the other mods, and it worked fine. So overall, something went wrong when I put the Big Dripper on the Ijust S mod (the Big Dripper is a RDTA, so while it still worked, after 2 hits or so I pushed a button releasing liquid onto the cotton and coil, it was right after that, that is stopped working, I checked it though and its not even like flooded or anything so I don't have a clue what happened there). So my RDA and tank both work, just not on the Ijust S, and the Big Dripper isn't working at all. I think when the Big Dripper went out on the Ijust S, it messed it up so now, know tanks or RDA's are working on the Ijust S mod. Someone please try to help me out. I really don't want to have this be a waste.