Kenmore / Dryer 800 — scam!

I purchased a kenmore 800 dryer in December 07. The buzzer would go off but the clothes were still all damp. The repairman came and replaced the heat panel. The dryer would still go off and the clothes were damp. Apparently the moisture sensor is highly sensitive so as soon as one article of clothing is dry, the dryer shuts off. Great design, right? They said I need to experiment with different amounts of clothes till I get it just right. My 16 year old Kenmore dryer used to shut off when the clothes were dry. So much for new and improved...