While cleaning my 2005 Z4 (a garage queen with 16K miles) yesterday in the the SoFL heat (not really hot yet, but about 82 degrees), I noticed that the plastic cowling that sits over the bottom of the windshield was buckling. That is, it was puckering up off the windshield at about 4-5 different spots; otherwise, it was flush with the windshield. However, that night, all was flush. Anyone notice this on their cars? Think it is a defect worth taking to the dealer (I'm still under warranty)?