What function does the head button on a TREX V2 have? I had a crash a couple of weeks back and noticed that the head button was bent, so I removed it.

Fast-forward a couple of week to last night: I straightened the button and was trying to re-attach and the darn thing won't screw in! It only catches like maybe one thread and won't screw in all of the way. It looks like the cause 'might' be too much thread-lock, as I am getting stuff out when I dig around in there with an exacto knife.

Note, the button was VERY securely fastened when I thread-locked the head, so I did not remove it and re-thread-lock. It was this way from the factory.

Should I be concerned?