Ok, update. I found an old post that had some info. Get humidity up while lockdown. I never got it really high before. Usually around 65. Now I got it to around 75-80. Also, add a tablespoon of bleach to the humidity water pan. That helps kill any bacteria floating around the incubator. I guess bacteria can get through the shells and eventually kill the developing chick. I moved eggs to smaller, plastic double decker incubator. Last couple days I saw some eggs moving a little when shining light on them. Yay, this morning I looked in on the eggs and 4 little duck faces were staring at me. Still more working on getting out of their shells. I finally had success hatching Mandarin duck eggs. Also, I would mist the eggs with small spray bottle that I keep in incubator to keep water same temperature(so water isn't cold and shock the chicks inside the eggs). Mist every other day. Some say hand turning is best, but I had eggs in sportsmans with quail and pheasant on egg turning tray. Hope my experience can help others. I know how frustrating it is when getting to lockdown/hatch day only to have chicks die in shell. I almost gave up trying to get some to hatch. Now I'm glad I didn't.