I actually had the opposite experience when moving my jungle into a CB-70 -- she turned into a chronic pusher and managed to damage her face and lower jaw quite badly. The pushing behavior subsided since moving her into a 36x24x18 cage (with perch), although she does still push right after doing snaky business or when she knows she's about to be fed. But she's calmer over all in a cage and hasn't damaged herself in it. If anything, I should provide her a bigger cage. They're individuals, run with whatever works.

I wouldn't dream of putting pure adult diamonds in a rack, not unless it was well ventilated and in a slightly cooler room dedicated just to them. Crosses, you could probably get away with it.