Hi, Pavel Simek has some parts for the gate, not sure if has some extra. You would need to finish it, shape the top parts and weld it together. And I know Zoran n Poland was making the lever, I sent him some photos and drawings. Not sure if he made some extra.
And as I remember, someone had a article in yowl about complete set available, I think it was Alan Noakes, check the June 2020 Yowl.