I agree with Robin pretty much. Cutting at 45 days serves no benefit for the snake. No Ball is going to looking to come out at 45-50 days --regardless of cooking temps.
I cut most of my eggs -- NONE outside a 3-5 day window of them coming COMPLETELY OUT on their own. I cook at 87 degrees. My guys are coming out at around 58-61 days. I am not cutting these days until 56 days or later. I leave ALL my hatchlings in their egg box on fresh wet paper towels and water dish until AFTER their fist shed.
Cutting 10+ days before snakes would pip on their own serves no purpose other than WE want to see inside earlier than would be "best"!!!![]()