My shooting suddenly got worse. Tube sets seemed okay. My symptoms weren’t any worse than usual. I just couldn’t hit well. So I got a big target and tried to do groups of five trying to do identical shots. Normally I keep adjusting everything. The groups were okay with each technique, just too far left or up or right.
The best shots were where I didn’t have an anchor but drew the pouch well past my ear which meant:
Faster flatter trajectory
Free of bouncing pouch off my cheek etc.