Hi everyone,
Thank you ALL for the great advice. I did the following:
Wet sanded with 1500 and 2000.
Micro mesh pads and wet sanded all the way up to 12000.
Polished with Meguiars ultimate compound.
Applied two coats of conductive shielding paint to all the cavities.
I am reading around 4-5 ohms on the multimeter?
Here are a couple of images.
Cheers,
Alkay.