I'm pretty sure it was the way you put the eggs in with the pointy end up as you now know it should have been down as the air sack is in the larger end of the egg. I assume you are using a styrofoam incubator. I have always had to put a wet sponge in my styrofoam incubator as the humidity with just filling the reservoirs just doesn't do the trick. Also did you take the eggs out of the turner on day 18 or 19? When I take the eggs out of the turner and set them for hatching (going into lock down) I put in another wet sponge. I try to keep the incubator around 50% humidity and when I go into lock down I raise it to around 70%. I run my stryofoam incubator around 100 degrees. Also did you take the plugs out as they need more air flow in the incubator when they go into lock down. You may want to consider adding a fan to your incubator. I do think you will get better hatches with the fan circulating the air, more even temp. With a still air incubator you will have cooler and warmer spots in the incubator. With your still air incubator you may want to move the eggs around on day 10 and put the inner eggs to the outer edge of the turner and vise versa. These are just my suggestions.