Hey y'all! I've had one of the classic Model 19-9's for about a year, its on my belt when I'm out feeding cattle, hunting, or camping. I absolutely love the gun, especially after replacing the skinny factory grips with some fatter Thai grips from Ebay. Comparing it to my Model 19-3, I have noticed that the rear sight blade is much shorter than on the -3 (I've included a pic). The -3 is overall easier and more comfortable to get a quick bead. I'd like to replace the -9's blade for one with the white outline and ideally taller. Would I also need to replace the front sight if I use a taller rear blade? Plan so far is to replace with a taller blade, bore sight, and then shoot to sight in. If anyone has insight on sight swapping and blade heights, I'd greatly appreciate it!