I have the issue where mine rattles by only if I'm at highway speeds (60-80) AND on long right hand curves or lane changes to the right on highways. Checked for Bent rims, by lifting on stands and c recording every wheel independently, had axles, hub and suspension "checked" by Sears, i checked brakes and found seized guide pin, turned out to not be the problem. Rotated wheels, balanced, alignment. Nothing. Thoughts?