I just found this thread.
I set 12 Swedish Flower Hen eggs on 2/11.
Long story, but when I decided to go ahead and start them, I had only 9 eggs, and wanted to set 12, so I added 3 that had been in the fridge for 5 days. Believe it or not, those 3 look great. I did have 2 clear and 1 early quitter. The rest look pretty good.
I am using an insulated box that DD and I made into an incubator when she was in 2nd grade, That was 13 years ago! She had to come up with some type of experiment. She didn't want to do anything that would potentially kill the chicks, so we divided the incubator in 2. Those near the light were kept at a temperature of as close to 101 (38.3) as we could get. Those further from the light were kept as close as 99 (37.2) as we could get. We had some type of baffle in between the 2 groups. The eggs kept at 101 hatched a day earlier than those at 99.
Someone posted a question on how to tilt eggs. I have my eggs in an egg carton, and just tilt the whole carton one way and then the other. YOu can prop it up with something. It only takes a couple seconds for me to shift the eggs from one side to the other.