increase number of bars per line.

hello,
i would like to write a piece on one line. (no line breaks)
i change the page size to 900 feet wide so i wont run out of room.
the problem is that when i get to bar 38, i can't add any more bars.
there is plenty of room on the paper.

i'm using 0.9.6.3 on windows 7

can this be easily fixed?

thanks,
ryan