Has that umbilical chord a normal size?

[Bogertophis]

Thank you for your replies.
Meantimes he look out the egg and is breathing.
The second one that yesterday came out of the egg have past away last night. It’s sad! He has 50 gram. I wonder why. Yesterday evening I get him out of the incubator, washed the vermiculite off, and put him in his Box. Today morning he’s dead.
The first one looks very strong, she has 60 gram...

Sorry for your loss. Personally, I'm not a fan of cutting eggs; I know many do that, but in nature, no one does, & snakes that "need help" coming out may have internal abnormalities that you cannot see, but which affects their survival just the same. Even if they do survive, do you really want to pass on these traits to future generations of snakes if & when these grow up & happen to reproduce? I wish that everyone who is breeding snakes would consider the big picture, not just immediate rewards.