i replaced the hammer and hammer bushing with a hammer and bushing from my ruger mk2 then you can just remove the safety arm and spring.
the loaded chamber indicator has a pin, spring, indicator and a little silver feeler arm (the offending part) which gets clogged with grime VERY VERY fast. just remove the little silver part and slap it all back in place.
"Gun control: The theory that a woman found dead in an alley, raped and strangled with her panty hose, is somehow morally superior to a woman explaining to police how her attacker got that fatal bullet wound." — L. Neil Smith