I tried this last round of cells. I dropped the temp on day 14 because there was bad weather coming. I brought it down to 85, but didn't see much of a change in emergence. What day do you drop the temp and to what level?It's also a trick you can use if you have an incubator. Lowering the temperature can buy you a little bit of time when the weather is bad.
I once placed roller cages over queen cells in a finisher, 2 days before expected emergence. They were In the top of a strong hive, but when it got cold they nearly abandoned the cells. Couldn't get close because of the roller cages.
I put them in the incubator and there hatch date came and went.
I had other cells in the incubator too, and just left them in over the weekend as I went off out of town.
When I came back an looked another day later, I was surprised to see one just emerging..three days late. The others emerged the next day-a full four days late. All looking normal and were mated and over wintered.
What the temp was in the finisher hive where they got chilled is unknown. Since I normally get a hatch a day earlier than the calendar says, they may have actually been closer to 5 days late.