SS454 timing questions

[Grapejuice1998]

I have just completed a rebuild of my hei distributor and have a couple of questions.

 

First, base/initial timing.

Where do I need to be on that?

 

Next, it has 3 different sets of springs, so it will advance in 3 different curves. (see: sideways attachment)

Which curve works best for a mostly stock 454?

 

Last, it also has an adjustable vacuum advance. The instructions say to turn it all the way clockwise to start with.

How do I go about the fine adjustment?

 

Thanks!