ok ok yeah he could be stressed, so set up his tank, and leave him be for a while (week)..... hides and temps are important. but i read you check every 10 mins and stuff that to much, put the mouse in there and go away for like and hour but also be listening for nosie and what not. also snakes can go for a long long time woth out eating i have an adult male that might eat 4-5 times a year and hes as healthy as any other snake i own hes just to worried with breeding i guess....so to me you dont need another tank you need a mouse cage, if your feeding live, and offer every 5 days, if your doing frozen get another snake that will eat that same prey item, hence my king snake i keep to the side, and offer it to him every 5 days if he dont eat your king would lol. but the most thing you can do is realize snakes are tough have a wonderful metabolisum, that aint how u spell it but you know what im sayin, and can go extreamly long with out eating, so just be calm and he should eat, sometime, a pic of him and setup would be great