Stephen,
Thanks once again for your insight! I am still seeing an additional line on some planes (looking at real photographs) but not on others. In the second photo that you shared you can see the line on the outer part of the wing starting at about the middle of the upper wing and attaching somewhere to the outside of the outer braces. I have seen photographs allegedly of the D.IIIa model where this line is present.
If you think of it later on when the site is back up and running, I would love to see the Pfalz planes in your collection.
Anyway, once again you have some exemplary work shown here. With the number of Dr.1's that I have seen just in our two Knights of the Sky group builds, you have to be close to having models of nearly all of the Dr.1's that were built.
I look forward to seeing your build and comments on the new Roden DH2. It looks good in the box, and they did not try to "fade" their decals.