Customers and observers of Washington’s Metro system know that the region’s transit agency has problems. And now there’s a damning report to back that up.Federal Transit Administration officials started reviewing the operations of the Washington Metropolitan Area Transit Authority shortly after after the deadly Jan. 12 Yellow Line incident. A train stopped in a tunnel just south of the L’Enfant Plaza station was engulfed in noxious fumes, sickening scores of riders and causing the death of one woman.