I've rewritten the first 2,000 words of the last chapter of The Durand Cousins three times. That's sort of like doing three drafts, isn't it? Reworking that stuff over and over is keeping me from pushing straight through and finishing by Christmas Eve.
I'm also worrying that 2,000 words is seven pages, and I'm not even near the climactic moment. And then you need a little post climax denouement. I'm afraid I'm not on the last chapter at all.