When satisfied the order of finish is correct, all timely objections have been addressed, and the race has been properly run under the rules of the Board, the stewards shall order the official order of finish confirmed and the official sign posted for the race. The decision of the stewards as to the official order of finish for pari-mutuel wagering purposes is final, and no subsequent action may set aside or alter the official order of finish for the purposes of pari-mutuel wagering.