When are you feeding him? Mine is such an adventurous snake he's not interested in food when roaming around his tank. I noticed the best chance of mine eating was if he's waken up with a rat dangling close by. I've had 100% success feeding him that way. My guess is the instincts come up when he's just woken up and not in adventure mode

And it doesn't even matter if I dangle the damn rat in front of his hid or if I just let lay there. In minutes it's gone