There is definitely something hinky with some of these. While I had to pull the contact post on the first few T3S coil heads, I haven't had to that with the next few I've tried. I've lost track of what came from where but I have bought:
--1 complete, clear T3S
--1 complete, stainless steel MT3S
--1 box of 1.8Ohm heads
--1 spare base
And right NOW, I'm using both the clear and stainless steel one with no issues whatsoever. No contact issues, no leaking, no gurgling, no burnt hits (I THINK I pulled one of the flavor wicks out of one of these heads though). I don't know what to say, but when they're working like this, I LOVE them.