I miss working in a shop some days. Then I hear stories like this and don't miss it.
My favorite was folks who wanted the bow tuned to them. I'd shoot bullets through paper. They'd practically fling the arrow sideways. They'd want it adjusted. I'd refuse and tell them they were torquing the bow so bad it's a wonder the string was still on the cam. Literally would stand behind them and take pictures. Had one guy who I stood behind and had him adjust his grip until it wasn't torqued. Lo and behold, his bow shot bullet holes!
But, "it just didn't feel right. That's not how I shoot, and I've been shooting for years."
So we moved his arrow rest until the adjustments were maxed out and he was shooting something that resembled a decent tear.