So, here's the deal. I've shot pool for almost 30 years successfully with a low stance, my chin on or very near the cue. I've been struggling lately, having trouble hitting the OB precisely. I began to question my vision center, but it doesn't seem to be off. The last three sessions, I tried shooting with my chin about a foot or more above the cue line, and bingo. Problem solved. Apart from straight pool players and older players that have trouble physically getting down low on the shot, does this seem normal? Has something changed in my depth perception? I can't explain it, but a more upright stance seems to work VERY well for me, I'm drilling them. Even long tough cut shots are more consistent for me.