Honestly, just shoot the thing. It doesn't matter if the arrows go end over end 3x before hitting your target, as long as you do the same thing every time. Work on your form, your release, your back tension, and you will have much more margin for improvement from these things. I used to get soooo technical on things like this but after getting my butt handed to me repeatedly by guys that have 10 year old equipment, the wrong arrows, a $20 sight, etc I realized how very little equipment matters. Get it within reason and shoot it. Right now my spots bow is not even paper tuned, or group tuned, or anything like this, but it pounds spots when I do my part.