Hello! One month after purchase, my brand new 2017 Beetle Convertible soft top, while up, started making a popping noise on both the driver and passenger sides when I drive over a bump or even an uneven patch of road. Sometimes the windows rattle as well. The dealer says the sound comes from "normal flex" of the top and can't be fixed, but my car sounds like it's already 10 years old. Tell me this can't be right for a brand new car. I didn't hear these noises the first month of driving. Of course there's a lemon law but I love my car and hope it's not a lemon! Any advice would be much appreciated - thank you!