Dryer wouldn't heat

Had a repairman tell me I needed a new controller for about $350 so I decided to do it myself...found the schematic and tested the termisters. One of them was much lower than the range so I ordered a part of the web (here)...The diagram shows the thermistor and the safety switch so I ordered the wrong part (out $40). Ordered the other part which turned out to be the thermister. Took two weeks to get through this..Sure enough it worked!