Hunger is a great motivator..especially w/Morelia! Wait him/her out for a few weeks..I'd say 3 weeks easy. Try a live hopper or fuzzy overnight..once successful you can revert back to f/t.

I have used split brained hoppers for finicky "older" snakes as a successful ploy...its not just for newborn Colubrids! You might try super-heating a thawed item as well....sometimes an item that is really warm to the human touch (borderline hot) will provoke a feeding response....those organs are there for a reason!I have an adult male Emerald that refuses room temp. prey but will slam a heated item..even my orther ETBs that will take room temp items hit them twice as fast/hard when heated.

Good luck,

Bill