FOR sale AN AMERICAN FLYER FRONTIERSMAN SET #23099. THE ENGINE RUNS GOOD HOWEVER IT WILL SUDDENLY REVERSE DIRECTION WHILE RUNNING ON THE TRACK. THE SMOKE UNIT WORKS, ENGINE AND 3 CARS ARE CLEAN, CARS ARE NUMBERED 20, 30, AND 40. THERE IS NOTHING BROKEN, CHIPPED OR CRACKED ON EITHER THE ENGINE OR THE CARS. THE SET BOX IS HEAVILY TAPED. COMES WITH TRANSFORMER, THE CORD ON THE TRANSFORMER IS PLIABLE NO CRACKED OR BROKEN INSULATION. A TRACK TERMINAL AND 10 PIECES OF CURVE AND 2 STRAIGHT TRACK. ALSO A COPY OF THE INSTRUCTIONS. THANKS FOR LOOKING.