Me personally testing wooded arrow spine alignment position? Nope not me. Don't need to reinvent the wheel or have much interest in that sort of thing.

I will say that the spine in wood arrows is the most pronounced though. Much more so then any other type of arrow. If you want any type of consistancy they will need to be matched. Most decent wooden arrow makers will do this for you though.

It's a lot different from shooting aluminum arrows. On an aluminum, the spine is much more uniform around the axis of the arrow as well as arrow to arrow. - Which BTW, I prefer.

Here is a good diagram that I found which shows why this is important: