In the meantime, I lost one turkey so far. But it was totally my fault. I intervened. Well, I guess it was my fault. I noticed the blood vessels were disappearing rather quickly from candling it (I could still see some, but all thin ones, and very few and far between) but I could tell he wasn't internally pipped yet. So I poked a small hole in the air-cell end of the egg to look. Almost no blood vessels were along the inner membrane either. So I poked a hole in that right by his beak. The last hole didn't cause any bleeding what so ever. But there were a few still remaining blood vessels that I could see at that point. So I made sure one nostril was exposed to the air, and left him like that. The holes were small enough to retain good moisture on the membrane. But I got home from work, and he was dead.
So maybe it's because I did an internal pip too soon. Or maybe he was already dying, thus the disappearing blood vessels. Either way, he didn't make it.
The remaining four have all internally pipped, and still have lots of movement. No holes made in those, because I could still see their blood vessels, and lots of movement. Just gotta wait now!