So very stuck...

No I'm not talking about the mechanical advance springs, my timing is set at 22* initial and 36* all in. I'm talking about the can setting. The screw and spring inside. I was wondering if by changing that spring I could slow the rate at which the can comes in... but I dont think I can access it. I was also asking that if the distributor is ported then does the carburetor act as the computer and only pulls the amount of vacuum needed for the advance it needs at that time. Due to the fact that as the blades open more vacuum is produced, would it slowly raise the vacuum. I know that eventually the timing will be all in. But up until that point if the carburetor is acting as the computer it will bring in the vacuum according to the amount of throttle used and creating the "curve" or balance between firing and ignition. Man I can see the process in my head but I cant seem to say it correctly here. Maybe I'll make a video and try that way.