Mike,

There are little plastic "sleeves" which push into the holes then you push the badge into them. I had the same problem on the first 6.9 I had and also on my current 6.9, right around the badge. In order to remove the badges without messing anything up, you need to be real careful and use a small flatblade screwdriver and gently pry the badge up, a little on the left and then a little on the right, then a little in the middle. If you break the badge, they can be had cheap--especially from junk yards! I think it just happens because of the natural effects of air on eposed steel (such as when it's drilled into for such purposes). Some cars are just lucky!

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Regards,
Aaron