Well, I thought that too, but even used big handle screwdriver and torqued it real good. And still tight when removing it, after ohms have went up.
Air flow grub screw-removed it completely thinking that was keeping 510 pin from tightening everything together but that wasn't it either. It doesn't effect my vape ALL that much really, but these kinda things just irk me sometimes and I just want to figure it out!


Good suggestions and thanks. I still haven't vaped another atty since these minis, pretty much my vaping bliss when working right.... which is just about all the time anyway