Nikon SB-600 hot-shoe locking device?

Ok, so I have a Nikon SB-600 Speedlight and on very dim light my Auto Assist Light beam does not light upat times. It's a hit and miss sometimes. My question is to anyone who has the same sppeedlight or any nikon speedlight is, when you turn from unlock to lock, does the two pins in the button stick out to stay form when you mount it to your camera.

I talking about the 2 side rectangle pins on edges, not the contact pins. I know the very front pin does come down to hold from sliding out of the camera shoe but I don't remember if the 2 side rectangle pins also came down.

Here is a pic to better illustrate what I mean

I don't think there's anything wrong with it.

I have an SB 800. The illuminator does not always light up. I don't know what body you have but it could be to do with the focusing mode.
If it lights up and focuses it will not light up again unless you focus on something else at a different distance.