I'm not one to hatch anything for the last few years but want to hatch this year. I have a standard still air hovabator with the golden wafer heating. I want to add a thermostat to control the heat better. Any suggestions as to how to do this. I have seen the thermostats on ebay for incubators? but I am not sure if I buy just a thermostat if I can throw it in and all will be good? Thank you!