Got home from riding today and noticed one of my front rotors was very hot and the other side was cool. Took the pads out and caliper off and everything seemed ok but still makes a scraping noise while spinning wheel. Pads are about 2 months old and seem to work ok. Its not something I really checked before tempature wise. Should I mabey be more concered that one wasnt hot at all? How hot is too hot for brakes? Wasnt hot enough to sizzle spit but dissapeared in a second or so and couldnt keep fingers on it for more than a second or 2. any ideas???