Hi guys. I know I mentioned this before. Before my health issues and before giving my car to my son,I ordered plastic nuts and flat head bolts and ground two sides of the bolt heads square making them easy to slide in the rear of the moulding. No chance of scratching or rusting at all. Now that my son who I call "the perfectionist" owns the car chances are he removed them and made stainless steel bolts to match the originals. Being Director of Engineering at Bose Corp. he can usually reproduce almost any part on the car. Sorry not trying to brag.