Im not too sure but id give it a good going over with APC and then try revive again, failing that have you thought about spraying the grill satin black?
Im sure someone else will come along an give a better answer though.
Clean it with IPA and if it won't budge you could mask it with Revive or C4.
I had this problem with my front bumper inserts. I tried many ptoducts and combinations and it still wouldn't shift.
In the end I just sprayed them.
Good luck though
what ipa sounding a bit think i thought i might try polish
Noo! I'm yet to see a polish that doesn't stain plastic trim!
IPA = Isopropyl Alcohol. It dissolves most things
(sorry mate x)
Aucky thanks mate.
Dan yeah i know she will kill me if she sees it.