Edelbrock Thunder Series Adjsutment

Is any one using a Edelbrock Thunder Series 800 cfm carb on their small block?

I've recently changed to this carburator on my 360ci. This engine is dyno'ed at 430 hp at 5750 rpm and 460 torque at 3750 rpm. It's metering 69 gph on the power band. Anyone have any experience with a starting adjustment to set up the secondary air valve spring on this engine?