I'm having a similar long incubation this year as well, and mine were at a steady 88-89 the entire time. I had the first egg pip and hatch on day 60, I cut the eggs on day 64, then another hatched on day 65, three more on day 66, and one so far on day 67. I'm waiting for the last two, (who have been cut & candled and are moving around in the eggs). So far one female, 5 males. Hoping the last two are females. Dunno about you, but I'm going to reevaluate my incubator situation for next season. Regardless, it is a beautiful clutch of normal/cinnamon babies, so long incubation or not I'm satisfied.

S