[Setec Astronomy]

efnfast...aren't you the other guy that did this, on a rocker panel? Are you saying that was a factory defect? On the one hand, there's no two ways about it, plastic panels conduct less heat. On the other hand, I'm sure there is some variation in paint adhesion, and if you happen to be on one of those spots, you know...wrong place wrong time. Plus, they DO repair things at the factory when they don't come out right, so it's possible in both of these instances it was the combo of a not-quite-to-par spot that got heated up.

The Corvette example is a little different because the glass fiber in fiberglass/SMC makes the panels more thermally conductive than the polyurethane/etc. bumper covers.