Since we are talking ball pythons and not garter snakes: It sounds like they do not like their current enclosures.
I haven't found that upgrading to a larger enclosure solves any feeding issues. I have found that downsizing does work in some cases...
Note: I would hate to keep a 120 gallon with 2 ball pythons in it. It would be awkward to clean, require multiple thermostat controlled heating zones, and my vertical space would have to be aligned very carefully so that one snake could not easily dislodge something and crush the other...