Metal pieces coming through the rubber

The product is great if you put it on once and never move it. But if you need to take it off and put it back on at all, during normal wear and tear the metal pieces begin to protrude through the rubber. So every time you take it off or put it back on it scratches the vents. Sorry to write a bad review but after now seeing multiple scratch marks on both of our cars, pretty bummed that the rubber didn't hold up.

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