bullsnake eggs denting badly. need help

i need some help. my bullsnake had 9 eggs and each egg is denting in badly. i have kept them warm and keeping them moist but hasnt helped. why are the eggs doing this denting ?

How long have they been incubating...and what is their expected hatch date? I don't know much about bullsnake eggs, but I know python eggs begin to dent several days to even a couple of weeks before they are due to hatch....sometimes enough that you wonder how there's even room for a snake left in there. Maybe bullsnake eggs do the same?

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