All of my parts are original (so far, knock wood!), but my father, Poppy Le Pew, had a hip replacement 15ish years ago, and is in need of another. He's been caching for about 17 months, and frankly, some times i'm glad that i did not know where he was going beforehand, because i would have worried, and might have advised him otherwise.
Hardest lesson for me is that it is none of my business. he will do what he knows he is capable of doing.
he doesn't need a daughter fussing over him.