You are correct.
I was bringing attention to this, for the people who want the ability to make bigger power gains.
That this company does not do that.
You also would not get the improved fueling curves that some of the rebuilders talk about even on their regular or stock size cc pumps
The one time I have messed with this, a guy I worked with had a stock 94 idi and had the pump rebuilt. He said the rebuilder told him he had "turned it up". When he was pulling his boat over the mountain it would start blowing a lot of black smoke.
I found a article a guy had written on the internet on how to adjust the fuel. I turned it down two flats and no more black smoke. But he said that the next time he pulled the mountain, it started losing speed and the cruise control kicked out. He dropped it off again, and I turned it back up one flat on the allen wrench. He said that was perfect, it held speed going up the mountain pulling his boat. He was a big fisherman.