I have a Glock 23 which I've carried as a duty weapon. The pistol has Trijicon night sights on it. The problem I have is that the pistol doesn't seem to shoot where the sights say it should. When shooting at a silhouette target at 25 yards to place rounds in the center of the target I have to use a neck/head hold when sighting. I've lived with this "Kentucky windage" thing for some time, but it just doesn't seem right. Do I need to try to get some adjustable sights installed, or a different sight blade or something? I don't have this problem with other pistols I own. Any help anyone could give would be appreciated. Thanks.