Before you start with the carb, can you tell us what the initial timing (at idle) and what is the total timing?

Carb Basics: Do you have a vacuum gage?
Does the car have a tach?
Try spraying starter fluid or carb cleaner around the intake/carb base to see if there are any vacuum leaks. If the idle rpms change, fix the leaks before tuning the carb.

The above are just some basic things to check before digging into the carb adjustments. Once everything is ready, then we can help you out with the carb tuning.