I'm getting TIGHT groupings on the targets. I think I figured out what it was. When starting back after my shoulder surgery, I'd cranked the poundage down slightly to 50# to start. When I cranked the poundage back up, I'd already adjusted the sights, thus I was getting groups exactly 4" to the right. Now I'm back at full poundage and enjoying my usual Xs. That makes me inclinded to think spine was it when I turned poundage down. I had forgot about the changed poundage. "Thumps head"!