THE 2 SAMPLE FILM ROLLS RAN OUT AND THE ASSISTANT DID NOT REFILL WHILE THERE WAS STILL PLASTIC ON THE HEATBEDS. NOW I AM TRYING TO LOAD 2 NEW FILMS AT THE SAME TIME AND ENCOUNTERING PROBLEMS: 1) THE FILM JUST CIRLES ON THE ROLLERS (2) NOTHING EVER EXITS THE MACHINE. I WATCHED THE DVD AND LOADED IT AS THEY SAID BUT MY FILM KEEPS GETTING STUCK. WHAT AM I DOING WRONG? PLEAS HELP