Is your center speaker cover “wavy”? Basically it looks like it’s flimsy plastic and only has 3 anchor points. It rattles because it’s not really secure. They replaced it once already, this one is a lot better than the original one.
It’s much different than the B&O on the raptor and basically every other ford center dash speaker I saw on a lot. All of those it looks good and everything is straight/even/flush.