I have a Kenmore Elite gas dryer. It has worked well over the past 3 years, but the Ultra Moisture Sensing Auto Dry Level control has been leaving the clothing more and more moist at a given moisture setting as the years go by. The vent is clear, the area under the filter is clear and I get very good air flow out the vent. I'm guessing that there is an adjustable potentiometer (variable resister) on the circuit board that is used to fine tune the moisture sensing circuit. Does anyone know if one exists or where it is located?