Dull paint ideas

Just another suggestion.  If you're not careful, you can "burn" the paint if you're using an electric buffer, or take too much paint off if use use a buffing compound.  If it's just oxidation, you may want to consider an auto refinisher/detailer.  Not all of them offer a buffing service but if you find one that does, you can get a professional job done relatively inexpensively...I'd guess in the $50-$75 range.