OK...this will probably not make any sense to you but I would suggest trying one more thing. First cover 3 sides with dark paper of some type, second, stand in front of the tank and start balling up newspaper in your hands. Ball it up in loose balls and put them in the tank. Fill the tank about 1/3 way to the top with this paper, do make sure none get in the water bowl. This will add a lot of security for your animal and eliminate a lot of stress. Less stress will give you a lot better chance of him eating. After about a week drop an appropriate sized live mouse in with him, with the paper still in the tank. Leave it for a couple hours checking on the snake through the front glass every 30 minutes or so. If he does not eat then assist again. Try offering live food each time before assisting.