Each incubator has it's own personality and foibles. I thought mine was a steady one, but then I got exuberant misting and some water got up by the wafer and switch and I had some zooming temps. Lesson learned. Still had a hatch, but wondered if that was the cause of the late quitters.
Consider anything you learn from your incubating experiences to be educational.
Consider anything you learn from your incubating experiences to be educational.