I kinda shoot split vision/gap. I've noticed my shooting suffered going heavy FOC and shortening my arrows. By adding the 1"3/8s back and slightly decreasing FOC I shoot 10 fold better. Has anyone noticed that long arrows are more accurate? I think it may be easyer for your mind to pick up the point.
I don't know about more accurate but I have noticed that gap shooting, even a small difference in the length of arrow makes a big difference down range.
i dont use the tip but ,,,if the arrows arent fiying right beause of spine issues than theres maby ur problem.