Edelbrock 800cfm AVS2

i bought one of those as well and noticed the same thing. I did buy the calibration kit with the carb. However I leaned it out one step with metering rods that are available with the 750 kit. I used the edlebrock chart for that carb as my reference on what jets and rods work best . I also had to change to the black step up spring or it was a rich starting bastard when cold.