340 Idles at 3200 RPM!

Hey everyone,

So I recently rebuilt my carburetor. I cleaned it out and changed out gaskets. I adjusted the floats as per the Edelbrock Manual (it's a 1407 manual choke btw) and changed out the accelerator pump. Other than those two changes and new fuel filters, everything else is the same. I also changed the location of the pump connector rod from the bottom hole on the pump arm to the top hole.

When I reinstalled the carb on the engine and hooked everything, I started it up. Right when it fires, it revs up to about 3000 RPM, then steadily builds to 3200. I tried adjusting the idle screws right on the front of the carb, but no change happened. If anyone can give me insight, that would be great. Thank you!