My first few hatches, I assisted 5 or 6. Had to cull all but two before they were 5 days old. All were late hatchers. Culling a cute, fluffy chick is tough, and is just not something I want to do again. Since buying the Brinsea, I have not had to cull any, but I also have a drop dead shutdown of day 23. I see Amy's side, too, and your experience is a perfect example of success, but I have had far more heartbreak than success. I felt bad for WV on her last chick. Early on, when she said it was dragging it's leg, I knew what was coming. I know you want to give them every chance you can, but you end up getting so attached to the one you are trying to save that it's even worse when you have to put it down. That's why I don't assist, but you assisted and it worked.
"She said, he said... no one's wrong"