Since you added the overlays with the background name, you can also add the scale, shift, zone, and layer numbers with the background name as well with this format:
BACKGROUND NAME with OVERLAY to 1.0 100 100 in zone 1 at layer 1 with OVERLAY2 to 1.0 100 100 in zone 1 at layer 1
That way you don’t take up so many lines with separate shift, scale, and layer commands.
Just note that the scale number is only entered in once, instead of twice