fanfic writing blahs

So I have a story based on "Journey's End" that I started at the end of July, and it's sort of finished except that it doesn't seem to have jelled. The story overall is this strange mix of angst and fluff, and I'm worried that the emotional changes might be a little too sudden or, worse still, trite. And when I reread it I just kind of go, "huh," which is a bad sign because normally I am one of those annoying people who really likes to read their own writing. I'm trying to fix it, except I'm not sure exactly what's wrong -- the overall tone, or the fluffy aspects (never ever tried to write fluff before, and perhaps I shouldn't) or maybe it's just missing some bridging moments that will make it all come together.

Part of me wonders if I should change the POV. Or perhaps the POV is fine, but the whole approach is wrong.

I think I will go through the story and mark off only the passages I really like and see where that leaves me. Maybe it will turn out that those passages do hang together, and if they do then I will have clarified the "core" of the story and I can rebuild. Or maybe they won't hang together, which will tell me that I have two or more disparate things shoved together that need to be unshoved, and I'll have to decide what to let go.

If anyone else has any ideas, I am open to suggestion . . .