Paradox Build- The Stem

The worst thing about taking a break from building is that you forget the feel of the build and it takes time to get back into the groove.
Today, I am particularly flummoxed by the Stem. The plans are economical with detail, probably giving the sharp witted builder just enough information to charge ahead with the build.
Well, I'm not the sharpest pencil on the third draw down, and I note that the builder of Paradox "Johanna" made a mistake with the Stem.

So, the top image is a photo of Johanna's stem (with a large chunk to be added), then below are the plans. The key issue is that the Stem is three dimensional. Arrgh!

But, ahead I must forge. No matter if I make a "cock up", at least I will be learning from my mistake. :)