My carry 23 has Mepro's on it and after 11 years are still bright and useable.
Don't take offense, but it has to be asked- have you absolutely ruled out that you aren't shooting to the left? You need to shoot from a fixed rest to rule out any shooter error. Sights are sights- if the previous sights were centered on the frame and lining up fine, and the new sights are centered, then it's probably the shooter. Most issues boil down to the operator (I include myself in that, of course), not the gun.I just installed some meprolight fixed sights on my G34, but they were way off shooting to the left.. they seem to be properly lined up, but I'm going to adjust them a bit to see if I can get it dialed. Just sucks to have to tap them with a punch to adjust them. Did anyone have any problems with them being off after installation?