I get a troubling noise sometimes when I touch the brake at low speed. When I'm just coasting down my driveway, slightly downhill, and press the brake pedal to stop at the street, there is a slight "clunk" sound. I can only hear it when barely moving with the engine idling or almost idling. I'm about ready to take it to the dealer as the warranty is good for a couple of more months. But has anyone else experienced this and/or have an idea of what's going on? Thanks.