((((((Loulabelle))))))

EXACTLY! Excellent analogy about the dishwasher and the chores! And...it could be ANYTHING. Not necessarily food...but anything! The crayons are newer...or the colors are better. The pillow is fluffier...or on the other hand, if it turns out he hates it at dad's, the pillow might suck and he wished he never had to use it again. A combination of good things vs. bad things at each respective home. Best bet is to talk with the older boy and ask questions, but don't make him feel like he'll be in trouble if he "rats" out dad!

And, again...it could be his diet. But I suspect (just a feeling I have from personal experience...similar to Loulabelle's experience) it goes deeper.

__________________
Minds are like parachutes. They only work when they are open.

~Thomas Dewar~