I'm cutting with a 15" roll of vinyl, so the width should be the only issue. Is 13" too wide? I have taken the full sheet and deleted most of the images so that I just have 1 row that is about 13" x 2" and it seems to do fine. It just doesn't want to do the sheet full, but on others it will.
For example same image
Sheet one full of 3"x2"
Sheet two full of 2.5" x 1.75"
Sheet three full of 2" x 1.5"
Sheet two will cut, the other two have this issue.