14.45 with 12 sec combo... HELP

Did you check your timing marks for top dead center? Always check for top dead center. If the outer ring of your dampener is moving your actual timing will be less than what you set it for. And as they get older they are more likely to move. 5 degrees of movement wont be obvious by looking at it. This problem can be almost impossible to find without checking for it. Back in the day guys would just keep advancing the timing until the MPH dropped off,then check timing and tell friends "my car likes 44 degrees timing." Cause the dampener had moved.