I have 25 eggs that were shipped to me that are from silkies and 17 of my own in the incubator now that will get turned on around midnight tonight. If I turn it on before there is a danger of air bubbles messing a hatch rate up more. If I wait later I endanger the hatch rate. I think they call that being between a rock and a hard spot. Of the 17 that are from my girls some are larger than Jumbo. They are a cross between a White Jersey Giant Roo and a Jumbo Cornish Cross hen. I've been told it couldn't be done. I should have been told that it wouldn't be easy because I already have some coming out of the brooder on Sunday when the weather is nice again. They are huge babies. Legs the diameter of an adult white leghorn. I like to do stuff that I'm told I can't do.