Recently got new pads and rotors machined. Dealer used brake pad part number FL1Z2001D. Started squeaking when I slowed from 30mph, this was constant so I went back to dealer. They warrantied and replaced them with part number FL1Z2001E. They also machined rotors, again. Now guess what? They’re squeaking again!!! It really shouldn’t be this difficult. Am I missing something? Any help would be greatly appreciated. TIA. My Rap has 76K miles and I keep it relatively clean.