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AndrewMac Active Member Joined Jun 13, 2021 Threads 4 Messages 26 Reaction score 10 Location Pittsburgh PA First Name Andrew Vehicle(s) 17 GT Feb 28, 2022 Thread starter #1 Deleted Sponsored Last edited: Aug 5, 2022
Coastal-Mach Well-Known Member Joined Oct 21, 2021 Threads 22 Messages 2,053 Reaction score 4,101 Location Wilmington, NC First Name Anthony Vehicle(s) 2023 BMW M440i, 2026 GMC Denali, 2021 Jeep JK Feb 28, 2022 #2 It looks like It’s where the factory cleaned the casting with a wire wheel or deburring tool.