I guess my question is why do you want to house them together in the first place?! If it's so you don't have to go buy a new tank, then unless you have a tank the size of a small room, you will need to buy a new tank anyway! You've got a corn snake, which are VERY Hardy, however, balls are so touchy it isn't even funny. I've got somewhere in the range of 50 or 60 balls, and they are the pickiest snake I own by far (Close second would be the chondros). If you clean them the day before you feed, some won't eat just because you stressed them the day earliler.
Plain and simple if you want to get the ball get another cage. It's not worth URI's, and dry sheds. One trip to the vet would easily pay for a new cage.
Mike
http://www.snmreptiles.com
