I finally found the article I was talking about up above. I had come across it when I was on avianweb.com looking for breeders in my area.I clicked on one of the breeder names and it took me here http://www.plannedparrothood.com/buying.html
If you click on Avian diet (on the left)and read that page you will also find "see a letter from a breeder" click and read that too.
Still, it is the individual bird owner's call as to how much pellet they feel is right for their bird.Personally after reading so much about the bad effects of too much protein, I'd rather feed less pellet and not take any chances of giving too much. (however much that might be! lol) And balance it out with lots of veggies,and seed.