Here is a picture of my group at 15 Yards,
I had just set these arrows up.
Little High but they grouped well
I am thinking that you may be dead on with the grip problem. It don't always happen but it happens enough to Bother me. I am conscious about my movement at the shoot and that will pull the arrows to the Left. I know when that happens.
UPDATE I went out and flung a few this morning, the Grip made a tremendous Improvement.
I was Nailing where I was looking at without having to compensate. After 3 years of Shooting Wrong and now going back to correct it is going to take some Hard work paying attention to the Grip instead of what usually felt natural.
Thank you so much