I think, and I can be wrong (all you fools would testify to that in court) but it seems to me that you need to be able to Taylor the air flow to the secondaries by changing when the door open. Jpar doubled the secondary area, but he didn't double the airflow through the engine.
If the carbs are designed for the airflow you'd get through one carb, and you double it, you may not be able to get the spring tension low enough to pull both doors open.
In my mind that makes sense, but...in the jury room today 11 people had to question my knowledge of the English language and English composition. So it may not make sense the way I'm saying it, or it may not make sense at all.
Either way, I'm enjoying a ginger ale and enjoying Jpar working his way through this.