It will be a rusted bracket at the bottom of teh glass that bolts back through the shell.

I've a sunroof model and have had a glass out respray

- my bracket had rusted through moisture ingress.

It is bonded in and then has 3-4

(can't remember how many) bolts on brackets pulling it in tight.

I took my whole gutter off

- not sure if that is entirely necessary though.

.

.

.

.

.
