Take it from me that the Klindworth Chopin editions are the epitome of editorial rubbish. Throw it away, please!
Don't worry, I already looked into it and has already happened. Although I'm curious as to what really makes those editions so bad.
Like I said before, Klindworth adds all sorts of stuff in that Chopin didn't write. Fingerings are one thing, but when you start adding dynamic markings and tempo markings that weren't put there by Chopin, that's going way too far, IMO.
But I kind of don't want to go off topic now, as my question hasn't exactly been answered yet, heh.
(Unless that was an answer already...
Well, the answer to your question was that you don't need to follow Klindworth's arbitrary fingerings. But in other cases, sometimes you might get to fingerings that just don't work for you. The 'proper' fingerings all depend on your hand size and shape, though, so I wouldn't take any editor's fingerings as law. They're just helpful suggestions, meant to make it easier to work out technical difficulties.