This is my first attempt at building a cool-a-bator and I have a couple of questions. What direction should the air flow from the computer fan be going? Toward the side of the cooler that it is mounted to or should it blow out into the open space of the cooler? My other question is what is the best angle for the eggs to rest? 30-35-40-45 degrees? I am going to use a turner that rocks back and forth from left to right. Thank-you to all for your help.