Does it look like this? There is a groove? hard to tell from your pictures.
There is a groove but the milled piece of steel isn't flush with the inset of the head. The shiny part in my picture sticks out from the face a touch and the side edge is exposed and sharp. It doesn't feel loose but I haven't hit a ball with this exact head so I'm afraid it's not properly bonded. I've got the return in process. Shouldn't be an issue, just didn't want to make a mountain out of a mole hill...
It starts to come away right where the light gray is on the bottom "N" in TUNED