Sorry this didn't work for you this time...
What kind of an incubator set up are you using? Sometimes, it is a matter of learning the in's and outs of your specific incubator for your climate. Double check that the temps are correct and the humidity can be read accurate. It may be something as simple as a bad thermometer that is throwing off your hatch. There are plugs that need to come out in some incubators at hatch for air.
I am on my third incubator. I started with a hovabator, then went to a brinsea mini then to a cabinet. Hovabator was difficult because I was hatching in an old drafty farmhouse with a pellet stove and a wood stove. Major issues with keeping it stable and humid. I found humidity to be my worst issue. I tried dry hatching...I tried hatching at the humidity my breeders were suggesting...I tried at the levels other BYC members were at...difficult. My hatches went from 5% to maybe 80% with a lot of trial and error. Of course, I can't be sure my child and dogs weren't bumping into it too!
Mini was great...much more foolproof than the styrobator. I did control for the drafts and moved it into a area that was dark and not near windows. (The cabinet is completely foolproof- except when my boyfriend is on watch and crimps down the humidity pump tubes in the door...he means well!)