Always make sure to follow the directions thoroughly. While my friend would build the circuit, I would be coding out what it told me to in the book! Somewhere along the line I read that you should pinch the temperature sensor to try and increase the temperature. Little did I know, it was 200 degrees Celsius. Turns out the temperature sensor was facing the wrong direction and made a difference of about 160 degrees Celsius. :o Always follow the directions.
Ouch! I hope you stuck your fingers in some ice water.