I agree... try a direct feed by placing a 2 liter bottle over the brain w/bottom cut out to protect it from scavengers while feeding. Next, squirt some fresh chopped squid, clam, oyster, shrimp, or other like food via a turkey baster(chop well... about 1 tsp) into the mouth of the bottle, trying to make sure that the majority of pieces land on the brain and allow to remain for about an hour. Try this in the PM after lights out and tell us how it went.

Jason