could someone please advise as how to re fix a plastic undertray?

i appear to have ground-out at some stage and the tray is hanging low. I have put the front of the tray over the front lip to 'hold' it in place, but i think this requires fixing in place???

Many thanks,

Griff

I'm assuming that it's the same on all models which if the case there are 8 Torx T20 fixing screws down the sides of the undertray (4 on each side) and 3 Torx T30 fixings at the rear.

HTH

Many thanks!