Originally Posted by OldGuy

There was one very small and hard to see stain, similar to what you're describing, on the hood of my red 370. You could see it only when the light shined on it at a certain angle. I thought it was a tree sap stain or something. Unfortunately, I didn't detect it until I got the car home. Took it to another (closer) dealer a few days after delivery and they promptly and courteously "repaired" it under warranty. They used wet sand and other techniques I know nothing about, except that the car is now absolutely perfect without having re-painted the hood. Fair enough.