No! That would be splitting hairs , and from my experience you wouldn't notice a difference when talking inches. You dont need a ruler , just common sense as long as your perception is intact. Walk straight back from your target and shoot from close range out to your max. If they appear to be straight ,and your happy , then quit.

Put it this way. When I tune my bow , I tune it so bare shafts impact straight. Put fletchings on and it gets even better. So whenyou see people shooting fletched arrows that are impacting crooked , you knowthe bow needs some tuning.

Can you still shoot great groups? Yep!
Can you still shoot and recover a deer? Probably. But "probably" isn't good enough for me!