vertical spacing problem

[D Josiah Boothby]

Hello, all,

I'd like to change either the vertical spacing or the global staff size 
after page one, and can't figure out a way to do that. If I have the 
spacing such that p.1 fits three systems, p.2 has a glaringly large white 
space at the bottom. To see what I'm talking about, you can download from 
the following urls the first two pages of the score (in .png or .pdf, 
depending on your preference).

http://students.washington.edu/josiah/lilypond/ricercare-page1.png
http://students.washington.edu/josiah/lilypond/ricercare-page2.png
http://students.washington.edu/josiah/lilypond/ricercare-pages-1-2.pdf

The following is from my .ly, and I haven't been successful at trying to 
set the global staff size more than once, and same with setting the 
Staff.minimumVerticalExtent.

\version "2.2.6"

#(set-global-staff-size 14)

global = \notes {
    \set Staff.minimumVerticalExtent = #'(-5 . 5)
    ...
}