I'm sorry to hear about all the losses. It makes me feel so blessed and lucky about my little ones. I had 12 eggs and so far 10 hatched out. I am in love and driving everyone at the coffee shop and school nuts showing them pictures of them. I need to realize that "normal" people don't really care about my chicks as much as me but then "normal" is over rated.
By the way how do you clean an incubator? I want to do it properly.
you are supposed to wash everything down with soapy water and then disinfect it. You can buy incubator disinfectant, like the stuff from Brinsea but a weak bleach water mix does the job just fine.