It seems to run the same on reserve and yes I did change the float pivot pin and nothing seemed to be hanging. Dont think there was any corrosion best I could tell. There is a small bowl like thing on the side of carb that has a rubber seal that is shaped like a bow with a spring inside it. when I took it off to clean it, there was quite a bit of corrosion inside of it. There was also a small oring inside that same piece that went around a penhole that looked maybe fuel or something went in it.