Need Opinions. Have nothing to compare to.

I was just doing some reading about Demon Carbs and read that of the two ports I was mentioning, the rear port is constant vacuum and the front only has vacuum when the engine is revved. They said that the vacuum advance should go on the front port. I do not recall if there was vacuum on my front port when I rev it. I just know there was no vacuum at idle.

I will put a vacuum gauge on that front port and rev the engine to see if it develops vacuum when on the throttle. Could it be that I am hooked to constant vaccum so advance is coming in too early?

Just a thought