GAS PRICES HAVE TAKEN A BIG FALL THIS WEEK.  TRIPLE A REPORTS A 9-CENT DROP IN THE PRICE OF REGULAR UNLEADED TO SIT AT 4.53 A GALLON.  THE NATIONAL AVERAGE IS DOWN AS WELL THIS WEEK.  16 CENTS A GALLON TO REST AT A FLAT 4.00.  THE LOWEST PRICE IN OUR AREA COMES IN CLARION THIS WEEK, WHERE IT AVERAGES 4.25 A GALLON.