The Energon Pub

[Methusalen]

I just posted this at TFW2005 as well, but thought I'd see if anyone knew here as well...

I just picked up the 2 pack of Megatron (tank) & Prime (RobotMaster-like mold) for $10 on clearance at Target. My question is in regards to Prime.

When not using the "Punching" gimmick, is his upper torso supposed to ratchet into place, or is it supposed to be loose & spin around on it's own? I've played with the black button on his back, to see if I could lock the chest in place, but all it does is spin him around... There's no 'ratcheting' him into a pose, as he'll just spin around...
EDIT: I was just told that he does in deed lock into place, you just have to pull on that black tab harder than I was doing!