A kingsnake and a ball python are two different species with two completely different personalities and what works for one doesn't automatically work for the other.
You just got the male 3 weeks ago and you're already having them out together? How long was your quarantine period of them? Washing hands between handling them, not allowing them to share anything (cleaning supplies, tongs, etc)?
Overhandling a stressed out ball python (which his is telling him in all the ways that it possible can, asking to be left alone) is NOT going to help it.
I know you are really trying to help out, but some of the advice that you have been sharing shows just how little experience you really have when it comes to ball pythons and their care. It might be best to keep learning a little more before giving out advice that doesn't make any sense if you understand a ball python's nature.