Distributor Vacuum Advance?

I buy the mopar performance dizzy kit,plug the carb vacuum fitting, and set total.The MP dizzies SUPPOSE to have full advance by 2000 rpm . I check for 38 degrees,all in by 2000 rpm. Easy to do,and done right that sucker will respond. If your using standard gasoline you may have to tone down the total number a tad but she will still respond. Buy an adjustable knob type timing light to verify at what rpm full advance is occuring.