I discovered that, from a certain build date, the 2007+ GTS has a new front turn signal lamp which is bigger inside than the old one, and as a result, it sits too tight in the unchanged sheet metal hole, causing paint damage during installation at the factory.

If your turn signal lamp looks like this...

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...your paint underneath may look like this...

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...and this:

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To find out, you (or your dealer) has to remove the lamp and inspect the paint.

I'm not sure if this is a warranty issue, but we are touching up the damage ourselves. No guarantee, though, that it won't happen again with the following install...It is just too tight, from the new, upper reflector bulge, and the way this lamp is hinged on top.

So, take this as a fair warning that something might not be as you'd want it.