My new Brinsea Ocatagon 20 Advance says to heat the incubator up before inserting the eggs, but everywhere else the manuals and information I see says that they should heat slowly. So I'm thinking I want to put them in and then turn it on so that they gradually heat up. Any input/advise? The eggs arrive tomorrow via USPS, so my plan is to let them sit in the warming/warmed bator overnight then start turning the next day. Am I thinking right?