The problem with being too in love with your own project, is you linger over things. This would have been a great movie at an hour and forty-five minutes.
Three hours and ten minutes? I'm sorry, you need to trim the fat. King Kong has a very compact storyline. (What's interesting, is that the original has the exact same problem -- so in that regard, it was a very accurate remake.)
I could also have done without Andy Serkis being eaten alive by giant leeches. That's the kind of thing people are referring to when they talk about "gratuitous."
Aside from that, it was pretty good.