Jimbeaux,
I echo OZEE's experience with scrambled code. After you print out your listing, you will likely need to change only a few lines of Basic. I recommend just editing the changes at the > prompt one line at a time and then list the program to verify all is OK.
It took us a long time to get Humpty-Dumpty's 150+ lines back together again, character-for character.
CeCo3