Great job, thanks for the update. We are on day 50 and mine sounded not to long ago,I will do the same for mine.
Looks like Egg A went to sleep, it was poking at the bit of broken shell for awhile this morning then quieted down. Maybe it'll have a go at getting out when it wakes up.
I broke down and drilled a hole for Egg B this morning too, really is surprising how hard the shell is, even with that carbide end mill it took a couple minutes. It'd been 4 days since it sounded so it seemed like a good idea to give it some air.