Dear Black Baron,
I'm not sure if this is exactly what you're looking for, but here is Ltn. Jungwirth with his Fokker D.VII (OAW) 4464/18 at the Jasta 78b airfield at Bühl bei Saarburg. It comes from the superb album photos of Robert Dycke.
You can find more photos of Jasta 78b Fokker D.VIIs in the "Fokker D.VII Anthology 3" from Ray Rimell's Albatros Productions. In fact, the cover painting features three Jasta 78b D.VIIs.
Greg VanWyngarden