Hi, I had the same out come with my guineas this year, not a good hatch. I think it's the inconsistency with the temp in the bator. I live in Fl. and in the spring the air-conditioner is on during the day and the room gets cooled down. I block the vent in the room where the bator is and then during the heat of the day, the bator goes up to 102. I have to open the lid on the bator, or they will be well done. At night it cools down and at 6am the bator is down to 70. I'm constantly in and out adjusting the bator. I wish some one could tell me how to maintain a steady temperature. My very first hatch was 100%. I'm doing the same thing, but not getting 100% and the keets are having trouble with crooked toes. I don't expect 100%, but I don't know the reason for the spayed legs and crooked toes. It's not many keets with the problem, maybe 2-3 out of 30 keets. Is it vitamins for the hen?