How Do You Keep Your Back List Up to Date?

I know for me, applying corrections to older books when i find out about them can be enormous core. I actually did mess up one of my books completely with autio. And later i got to noticed that the whisper sink wasn't working in my ol so, yes, ut mostly yalecaus i just wont, i have a sell. Want to have some reason to, but i don't do with tem very much.