I have a Stinger mech mod. It's a full SS mod and recently I'm having problems with it firing right. A couple weeks ago it worked fine but not when I use it, my RDAs produce almost no vapor, and the button on the bottom gets hot to the touch after about 3 seconds. I know the RDAs are not the problem as I can put them on any other device I have and they work fine. I also use LG HE2 and EFest purple 18650 batteries so they are perfectly fine with firing my .2-.4 build. I gutted the mod and cleaned every possible part with a cloth and alcohol but oddly there was minimal build up of resistance. I'm really confused as to why this mod is doing this. Any Suggestions?