The real problem is NO industry "Standard" for either 510 pin length on Atomizers, or 510 pin depth on tube/box devices. Until there is a "Standard" for the industry to follow then this will happen. Unless I'm wrong, I have seen no "Standard" length/depth listed anywhere, if there is then someone please enlighten me. It seems that one company will set a "Standard" for one device/atomizer when THEY manufacture it, then a different company will set their own "Standard" for what ever device/atomizer that THEY are making. It's a Free for All kind of situation. Until "Standards" are developed and enforced throughout the vaping industry then the best that we can hope for is "
Does it work ?". Sad !!
Edit: This is why we see adjustable pins on Atomizers, but then Kanger made "set length" pins on the subtank/sub box kit because they set their own "Standard", just be careful if you use something different with either one of those, it might not work right.