Fine Tuning a 360 Magnum with a Brawler "Double Pumper"

So after a little bit of driving to work, it has a much crisper rev (I didn’t move the pump cam or anything, all I changed was the IFR to a .028, still at the top though).

I guess a mix of cleaning out the pump shot passage and getting a smaller IFR is bringing me closer to what the engine wants.

So in terms of what the IFR does, it limits the amount of FUEL that comes in, and the bleed limits the amount of AIR. The idle mixture screw changes the amount of air that comes through the idle circuit?

Do I have that correct?