Does anyone know what the metal tray from between the trackpad and battery is called?

I did a battery swap and that metal tray's adhesive is not sticking anymore and is loose now. I hear the battery and that tray moving inside the case after I closed it up.

I'm not wanting to use superglue, what other adhesive could I use if the old one is worn and not sticking now? I was hoping to purchase a new one with adhesive pre-applied...

Hi, is there a way to change out the nvidia 9400/9600 for a different chip, say a 8800 or 9800?

this is probably a really noob question but I had to ask