2001 Convertible with the factory Mach stereo, mulit-disk system in it. My problem is that when the temperature is cool outside, below 65 degrees or so, when I first start my vehicle up and try to turn the volume control down, it gets louder very quickly. After the car interior warms up everything works just fine. Not a big deal but wondering if anyone else has this problem. When I turn the dial real slow it will adjust the volume down then back up to a louder level. Any thoughts appreciated.