Use or don't use vacuum advance on distributor???????????????????

Ok so what I need to do is tighten up the screw in the vacuum of the distributer to raise the level of vacuum it advances? I am using a manifold vacuum and if I hook up the vacuum advance it runs like complete dog **** because it is advancing the timing at idle.
So, reviving a thread from the dead. Answers first.
1. What's your combination?
2. What's your intended purpose?