I need help adjusting temp on the Hova Bator 1588 I am using,it is suppose to be preset at 99.5 but it is running 102-104....I have tested the temp with 3 different thermometers and all 3 read in the same range...I know I saw a thread about adjusting the temp but I can not find it....Please can someone help me I have 2 dozen eggs waiting to go in. Thanks