... surgery continues

I'm half done with the revision (just finished Book 3) and the major surgery continues. The frequency of the needed changes are growing less frequent, but their severity has not. Book 3 has some big story chapters, and a great deal of contradictions and confusing facts were sorted out, and at least one gaping plot hole filled in. I also noticed a funny pattern in the way both Books 2 and 3 play out. Both begin with a great deal of intense action, which calms a bit in the 3rd chapter before a fairly tranquil forth chapter that mostly serves to built up to the first chapter of the next book. I wonder if it continues throughout the next two books.