Bright streaks move when we present the part differently (Fairino FR5)

Our planned presenting reflective components for surface inspection in a precision metal-parts inspection area has Fairino FR5 presenting a brushed stainless trim plate to a fixed camera. The example images contain bright streaks that shift with small presentation differences, yet those streaks are being labelled as scratches. Before commissioning, I'd like to establish reliable references and image conditions for threshold tuning.