How often are you guys changing out balls in your simulators? I got a case of the shanks with my wedges indoors and once I fought them off, I was getting super super low spin on all my wedge shots (like, sub 4k). Eventually junked the set of balls I had been using for a fresh set of Pro V1xs and was instantly back above 10k+ - stupid of me not to try switching balls out sooner. I think I had just beaten the old ones to death for too long.