Alright time to send this female to the belt factory...

[SlitherinSisters]

I assume you've incubated other clutches that ended up with no kinks, in the same incubator from the same male?

Yep.... I even put these two eggs in the same egg tub with another clutch just to be sure it wasn't me. The other clutch is happy and fine and going to hatch in about 10 days. This clutch is on day 20 if I'm thinking right. She almost always has some die at different times during incubation, all kinked when I open them up to see what happened.