There is a very large consensus that feeding in tank leads to aggression is a big ol' myth. That being said, I feed in a feeding box for numerous other reasons. What type of substrate do you use? A lot of people feed in the living enclosure regardless of the prey/ substrate type, but I don't know what you could do to get him to eat somewhere he doesn't want to... is it feasible to feed in his living enclosure? Is it very cluttered and do you use a substrate other than paper?