I have been having issues with the smok natural locking nut(?). I can thread it all the way down against the mod and all the way out towards the button but when I get to a certain point, it will kinda skip and keep spinning. I can have the locking ring (?) out and push the button with a little bit of pressure (like you would normally press it) and the button will push in with the nut causing it to fire. so I guess in all, there is no real locking feature on it anymore. anyone have issue with this happening or know how to remedy this issue. thank a bunch.