More carburetor questions and opinions..

Why not put a two stage power valve in it???

Because for one, as of now, I cannot find one. Two, if I can, I don't know which one it takes, as I cannot find any information on how the 4175 came stock. Three, I want to actually verify that a single stage power valve will make it act like it is, before I start dropping money on it as money is very limited and I don't want to throw parts at it without knowing if it will help.

That was my whole purpose for asking about it here. I was hoping someone might know more about these than I do.