[Hotrodjohn71]

I have a Rochester 2GC carburetor on my 1965 Pontiac engine.
This type of 2GC requires a check ball approximately .156" in diameter to go in a recessed check ball hole in the bottom of the accelerator pump well.
All of the research I have done regarding the check ball (that is in the accelerator pump well) says that the ball should be made out of aluminum.
The aluminum is lighter and allows the fuel to enter the pump well easier than a stainless steel ball.
The kit that I got appears to have a stainless steel ball for the pump well as it is magnetic. I am wondering if this ball is meant to be stainless steel in some models and aluminum in others?
I do know that these carburetors can have two or even three check balls. I have the other check balls in their appropriate positions in the carburetor. I am only specifically asking about this check ball for the accelerator pump well.
There is actually a carburetor shop nearby where I can get the aluminum ball, but I'm wondering if since the kit I got has stainless steel if anyone else has experienced this also.