I buy .001 straightness arrows first I cut a little off the front and back of the arrow and square both ends. I have a RAM spine tester so I check for the stiff side of the arrow and mark it, after I hot melt the inserts in I will square the insert. I then fletch using the same color vanes, if an arrow flies a little off at 80 yards then I will rotate the nock, if that doesn't work then I will heat the insert and rotate the insert. After all that I should have a good flying arrow
Do you have to do this to your arrows NO.
This sound like a lot of work and it is, however I enjoy doing it and it makes me feel a little more confident in my shooting.
There are a two companies I believe that mark the arrows stiff side from the factory; Victory Arrow Co. and the other Black Eagle Arrows