Hi Chazsi,
Not to restate the obvious. But, to the right of the style definition block, for example(ZZJAZZ.STY:Jazz Swing Style) is a C for key of C, t= for tempo, then parentheses with numbers. The first number in the parentheses dictates where your song should start playing, the second number dictates where the song will end. Outside the parentheses is another number that dictates how many repetitions the song will go through. By any chance does your song start at 1 and repeat at 8? If it does, then your composition has an 8 bar verse. Change the second number to the length of your song and you should be good to go.
Hope this helps. We all had to start somewhere.
Bill