Your welcome, I am currently incubating shipped eggs as well ,I always candle shipped eggs befor setting them to check for detached or ruptured aircells u can tell by loose air bubbles or the aircell in the fat part of them eggs looks loose and wiggles around as the eggs are moved ,I read that incubating in upright position and hand turning can give the air cells a chance to reattach ,if they do it will take up to day 12 . At this piont in the incubating (day 4)seeing veins is difficult due to the egg pigment the first sign of development looks like a very small circle in the yolk and the yolk won't move around as much when u turn the egg showing something is happening inside the egg. As far as checking they are being turned properly I mark the eggs with a sharpie on either 2 sides or 4 with automatic turner I like to number the eggs then mark the other 3 sides to see how far they are being turned.good luck


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