How long have you had the atrox? When i got mine it was brought to me by a man that used a rope snare to catch it, like you do dogs and cats, and he injured the spine behind the head about two inches. It was forever before he would take any food, and beleive it or not it was a grasshopper that got him eating again. Try leaving a dead mouse in the enclosure over night, bet it disapears. Does the snake have a place he can go where it is secluded, and feels safe? If he apears to be healthy, isnt loosing weight, looking scrawny, and is drinking water, he sounds ok. But something has it stressed out. The heat in my atrox cage fluctuates between low eighties to mid eighties, and the enclosure is large enough that one side is heated while the other side provides a heat escape. Be patient, the more you open the cage and mess with it the more it will feel like hes not safe and will continue to stress out. The advise i was given right here on this forum three years ago, was to leave it alone, dont mess with the cage, dont stand there peering into the glass, dont walk by every ten seconds to see if its moveing around. Take something and cover the glass so it cant see outside the cage, but keep the cover away from your heat lamp, and off of vent holes to prevent fire and overheating. Check the water everyday from an opening where you can just see the dish, dont remove the cover. Leave it this way with only water for about a week, then drop a dead mouse in the cage over night. He needs solitude, peace and quiet. Skinner