Okay, remember that scene I'd retrieved from a previous draft and added back into the manuscript?
I took it back out again.
The perfect final ending I came up with didn't fully jibe with the scene before it and I realized that it needed to be excised for the thing to flow properly. I spent some time coming up with a better way to conclude the penultimate chapter and after a few tries I think I have something that works.
I'm still in the process of reading the entire thing aloud to catch any missed fuck ups and to purge any awkward language. Once that's done, then it's time for conversion and handing it to my initial readers.