How to fix a black painted grille?

I dont have much advice to offer other than take your time and ask questions.
There will always be someone who thinks they are bigger better than anyone else. That person also tried some underhanded tactics on some trim I was buying. Seller of trim put him on ignore lol. Makes me question their integrity and motives.
If youre removing grills to fully redo them and need part #'s for studs lemme know they are available local and new.
Lye also removes anodizing, but be careful and good luck! Post progress pics.