Not enough vertical room for headers?

[Alasdair McAndrew]

A recent project gives me one page of typeset score.  However, the 
header information is all squashed into insufficient vertical 
space, so that the instrumentation and composer are overwritten.

I have given no directives for Lilypond to force the score to be 
on a single page, nor have I changed any of the page layout and 
paper parameters.  I've spent plenty of time looking through the 
manuals, but I can't find any easy way to simply increase the 
amount of vertical space available for the header.

Any advice would be very welcome!

Thanks,
Alasdair

--
Alasdair McAndrew
http://numbersandshapes.net