Tell Huey not to worry, Max & Teddy are on a diet too. I think grandpa was overfilling the measuring cup and giving them too much kibble, which is really bad because my boys still get lunch (Max refused to give it up when he became an adult).
We cut lunch in half less than a week ago and the boys have already lost 4 ounces.
Get a baby scale -- they are much more accurate than the holding on a human scale and subtracting weight.
Max loves the kibble in the Kong game. His first year, he wouldn't eat kibble out of his bowl. I had to hand feed or put it in the Kong. Silly boys!