Edelbrock vaccum line placement

[my new 72]

I am running an edelbrock 1411 and I need to know exactly where the vaccume lines should be placed. I have three ports on the front, and I know the one in the middle goes to a T-fitting that goes from the can to the pcv valve, but what about the other two. One is supposed to go to the Vac advance on the Dist. and the other to the can, but I checked the Vac to them both and one reads 10 at idle and the other reads 16. Should the Dist vac advance be connected to the one that reads 16? Right now it is connected to the one that reads 10 and I am having a few problems with it not idleing smooth it jumps between 575 and 650 when in gear. Anyone have any idea.