New Vamo 2, strange center post

[LubeTech]

I visited one of my local vape shops today and found a Vamo I've never seen. Bought it. So far, works like a Vamo 2.
What makes it interesting, is the center pin.
It is spring loaded, and slotted. Older brushes stainless on the left, new polished stainless version on the right. I've tried iClear tanks, Kanger tanks, SmokTech tanks and an Evod tank. All work perfectly, no shorting issues, all screw down to the stop.
Eliminates the o-ring issues encountered by many Vamo users, I think. Why is this not standard on all 510 and Ego batteries?

 

[LubeTech]

another look at the new center pin.

 

[Myk]

That's interesting. Took them long enough.