Try this
OK guys. Maybe some of you already do this but if not try it.
Next time you are shooting your bow, focus your eye on the target and not the sight pin.
We all know it is impossible to focus your eye on two things at once. I've always focused on the sight pin and had a somewhat blurry target picture.
I read in an old magazine about this. It also works with a scoped rifle.
For some reason, I shoot much tighter groups when focusing on the target and letting the sight pin be blurry. Don't know why it works but it does.
Give it a try and post back and let us know if you noticed a difference. Maybe it will, maybe not.