I was able to finish up the majority of the tail area. As you can see in the period pictures, the tail and fins were plain with no ribbing. I'm assuming They were plywood covered structures from the looks of it.

I made the horizontal tail and edged it in half round rod. I find that this gives the edge a nice profile rather than trying to eyeball it and hand sand it half round.

I made hinges so that the tail and fins would be articulated

And here is the tail temporarily taped into place. You can see that distinctive tail fin shape the Gotha G.I was known for.

The tail area still needs some priming and finishing but I'm pretty happy with it at this point.
And here is a shot of the fuselage as of today. A lot of work and a lot of fun.

Still some more work in the cockpit areas so more to come later.
Thanks for looking in,
Mark