I bought mine with the CGW bushing and never shot it before the modification. It's kind of like the 10x bushing on the 75B, if the factory bushing is a little sloppy, the CGW modification will fix it. My 75B was very loose before the 10x bushing. It is a match gun now, as is the 97B"E". I did a Kart hand fit barrel and bushing on a 1911 and it is almost as good as my CGW 97B"E".
I've shot 3" at 100 yards and less than 6" at 200 yards with the 97B"E" and won a lot of bullseye matches with it. No way I'll ever have one without the CGW bushing, 97 or 75.