I have something on my paint. My Nova has been parked in the garage and under a cover whenever I am not working on it but I have noticed the paint feels rough in some areas. When I dust the car off, and run my hand over it, I feel "grit" in some areas - especially on flat horizontal surfaces. The paint and clear coat have been buffed out - this may be from air circulation in the garage. Is there a good cleaning wax I can use?