What Terry_P said...I wouldn't tell anyone if you've changed springs or anything...and I've never heard of it being a factor in a self-defense situation. And in the discussion, what if you have a chronically sore or weak grip...that could be a valid reason to use 10# springs in your revolver.One of the elements of "Stand You Ground" is protection from civil suit if a shooting is judged to be self defense.
With a revolver I really doubt that many experts will be able to judge whether a particular revolver is stock or not. By going to semi auto's in the 80's most LEO's don't get a lot of experience with revolvers unless they also own them. So if a spring or two have been changed then they are unlikely to find out unless you tell them. The main issue is were you in fear for your life. If you were defending yourself then I think the gun modification questions are just internet fodder and you will prevail. Can you find a case somewhere, sometime where a DA went after someone that modified their handgun, maybe but who cares. If you life is in danger then defend it with whatever you have, if it is a belt fed machine gun then so be it. Better to be alive.
Which brings up the concept of using a Polymer 80 framed pistol to defend one's self...if the defender assembled the pistol himself, does that make it 'incorrect'?