I have 3 Pilgrim Goose eggs in my incubator out of four that I received in good order. One quit on me,. The three remaining ones are due yesterday, and have been rocking since Tuesday early morning when I saw them rocking! When I moved them to my hatcher I could feel them knocking on the shells, all three of them. Today I can still feel them knocking on their shells, too...but no rocking. Are geese supposed to be slow as in, watching-paint-dry-on-a-arainy-day-type slow? They have been in the hatcher for 4 days now...no pips,rocking is deacreasing each day...when should I worry/interfere?