My first handgun was a 586 6" back in the mid 80's. I had read every magazine around and had to have one. I lusted after that gun. I finally found one at Warshall's in Seattle and grabbed it.
Being young and dumb, I didn't recognize it was well-used. Evidently it had been used in competition as the action had been tuned, charge holes chamfered etc. It was also loose as a goose. It spit lead something fierce.
I took it to a local gunsmith for repair and he sent it off to S&W. They tightened it up, set the barrel back a turn and re-cut the forcing cone; at no cost! It shoots beautifully and won't be sold. Ever.