Well at first we had read that the eggs hatch at 76-80 degrees and a 60-80 day incubation time. So I use a frige/freezer as an incubator for bps. The temps in the freezer above my fridge stayed around 80 degrees. There was no heat in the freezer section, but the heat rising for the fridge were getting to hot i found them at 82 on some days. Deciding this was the cause of the eggs not hatching we moved the eggs to a shelf in the room. Still was having problems with the eggs not hatching. After talking to others on this forum we decided the food was the cause of the geckos not hatching. The females may not have been healthy enough. I also seperated my males from the females at this time. This was our females first year breeding could it be due to that? But yes we had three females breeding, got the first five eggs I think in April. They have laid eggs every month since then and to date I have had

4 geckos hatch on their own (1 died the following day)
3 geckos cut from eggs on day 65
1 gecko pip but died in egg
15 eggs went bad during incubation
8 eggs still in incubation
6 babies alive today out of 31 eggs
All of the geckos that have hatched hatched right at 60 days or a few days before. Earliest to hach was 55 days. So when the three eggs that I cut had not hatched ot 65 days it was starting to worry us. I made a slit in the nipple of the egg and slowly ripped and out came alive geckos. Like I have said in the op I will not pursue this practice, I would like the geckos to hach on their own. But they dont they usually go bad.