I can't give advice for your particular situation but I can share that I was surprised when I incubated my first clutch at 89f last year and the eggs started pipping at day 66. I think sometimes we lose sight of the nature aspect of development when we are attempting to control many of the external factors. I remember reading a thread about keeping underdeveloped eggs (prematurely cut) clean until they are ready to hatch; maybe search that if they start to smell? Hopefully they were *almost* done cooking and will be out under their own power and healthy...
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