Just received my new 617, 22LR revolver. The gun was shipped from the S&W factory with a 0.168 high front sight. At 15 yards, the gun was shooting 2 inches high. I called customer service and they sent me a 0.228 high sight. After installing the new sight, the gun shoots perfectly. My question is "how could this gun be shipped out of the factory with the wrong sight??"