you dont ever want to turn the snake eggs, you even have to be very carefull while puting them in an incubator.

snake eggs have a little air bubble at the top most part of the egg that is formed moments after being laid. if you turn the egg this bubble gets moved and when the snake starts the try hatching and there is no bubble for it to get its air from then it dies. NEVER TURN!!!

search this on youtube, chewy from snakebytes explains it better, its been awhile since i had seen that vid.