vacuum advance question . please help if. ya can. :)

[MrMitsu]

Trying to hookup the vacuum advance to theweber 32/36. But my vacuum advance diaphragm has two ports, and im not sure what to do with them. Oneport went to the stock mikuni, and the other went to the vacuum regulator valve. Im assuming the one that went to the mikuni is for high rpm and the other is for low rpm. And im also assuming i must eliminatethe port going to the vacuum regulator, and connectthe portthatoriginallywentto the mikuni. Thank you!

[camoit]

One will advance the distributer the other will retard. You want the one that will advance it. The advance is the one on the end away from the distributer.