Shead Problems

[Mike177]

Hi, today when i went to go peek in on my ball python he had an unsecsesfull shead, again. i dont really remember a time when he had a shead in one pice, i keep him in my shead were the humidity never drops below 50 but usally stays at 60, there is a water dish in his cage and i mist the cages from time to time, so its safe to say the humidity it right, the temps are right on, there is a hide spot on boath sides of the cage, and one of his hide spots also acts as something for him to rub on, i dont know why he never sheads correctly so i figured this would be the best place to ask.

Thanks,
Mike