My dryer constantly overheats and blow thermal Fuses. I have thoroughly cleaned my ventilation ducting and replaced the thermal fuses three times. I have also replaced the thermistor, the thermostat and the cutout. I had a repair technician come over. He said that the dryer fault system indicated insufficient inlet airflow, and everything else checked good. I rechecked my vent ducting and it is perfectly clear; but the dryer continues to overheat. What else could be causing this overheating problem? Please help!