Best of luck to you. I went down that road myself without any luck. Two trips to Ruger, barrel turning, sight bending, read sight widening, re-crowning and none would solve the problem. Either the frame casting was funky or the barrel hole in the frame was out of line. I refused to dump a dog on someone else, so I kept fighting, wasting more money and effort on it. Finally giving in all the way and having S&W rear sights added. But after all that the gun left such a bad taste in my mouth that I didn't want to look at it anymore and sold it for a lot less than I'd sunk into it at that point.