I was able to do it! I used Notepad++ and it basically took care of itself...
I did get that cut off thingy though. But I ticked on, off, or, then off again that header/footer option, changed the margin, then reverted the margin again, then the cut off got corrected...
It might be that doing o ly one of the things above fixed it, but I did them all and now I'm a happy camper...