WHEN I SET THE BULOVA QUARTZ WORLD TIME CLOCK, THE WORLD TIME WHEEL STOPS AND DOESN'T MOVE AFTER 6-8 HRS, AND WON'T TURN MANALLY. TO TURN IT YOU HAVE TO TURN IT IN THE OPPOSITE DIRECTION. THE WORLD TIME WILL AGAIN KEEP TIME FOR A FEW HRS THEN THE SAME THING HAPPENS