noticed today that the headlight mounting on my S197 (07 V6 Convertible) seems to be in two pieces - not a factory option I assume as it doesn't match the other side



a very quick look it appears that the mounting is integral to the headlight so...
1/ Is this something I can glue back together
2/ Do I need to replace the whole headlight unit or does this bit just unclip and I'm missing something really obvious?