Ignition Timing questions

I have a 340 high performance crate engine.
Engine builder states "use a mechanical timing curve of 14 degrees at 700 rpm, 27 @ 3000 and 29 degrees total at 4000 plus rpm".
So teach me something - I set the initial timing at 14 degrees btc and then adjust mechanical type distributor for 15 degrees for a total of 29 degrees btc ? or 14 degrees plus 29 for a total of 43 degrees.
I was going to look into a Mallory unilite which states can be adjusted from 14 to 28 degrees
Nowhere near a...

Ignition Timing questions
Author: Ralph