I have 3 fairly young pythons and they have all been in the same enclosure (6'x4'x2') its a custom built enclosure and easly big enough for all. My oldest has started to form a temper..i can't pick him up or even walk by the glass without him hissing. Nor will he eat. Whats wrong? I have adjusted my temp.to 82-83 keep dimm lighting, having trouble with humidity tho. I have no idea whats wrong please help