Bristen,

Two things to consider:

1. Consistent, stable temperature - Keep those fluctuations to a minimum. A well insulated incubator and heat controlled by a proportional thermostat are the best ways to ensure this.

2. Keep it at 90 or under - I prefer not to go above 90. This would be the temperature inside the egg box.

Don't worry too much about the temp being different in different parts of the incubator. Big breeders use room sized walk in incubators. The temperature is different throughout but it is stable. BTW, I am breeding at 87.8 this year. That is the temp in the egg box on the top shelf of the closet incubator. I am putting my potential Caramel eggs lower in the incubator in the hopes that lower temperature will reduce the likelihood of kinking. We'll find out! Good luck!

Jamie