ORIGINAL: BGfisher
You want the truth or do you want some BS. As I understand it you sighted in a 20 yard pin, right? Then they did some kind of black magic to set a 30 and 40 yard pin, right?
BGfisher, to be honest with you. I've set so many bows up that I can tell you that once a 20 yard pin is set, I can set a 30 and a 40 yard pin off of it and they will be dead on. I know, I've seen me do it.
Anyway, You are right, each individual pin needs set for elevations. Your windage, left/right will be exact if the pins are the same lengths. Some pins adjust individually as far as windage goes.
I'm sure they are darn close, a minor/slight up or down will get you there.
Good luck.