I see your actual memorial photo (where did you get that??? well done) shows all the airmen as 303? or does my delinquent Boys Own Paper German (via Biggleswoth) interperet "J. St. 1" to mean "Jaeger Staffel Einz" - if so - are the men here and below this line from the 304?
I did not include the reference of the source photo I posted - the photo of Von Kunsburg's funeral is from SAB in Germany (links posted on this thread) where they list Von Kunsburg as with the 304b.
I take note of your reference of 303 in the previous post (and the Memorial!!) - are SAB wrong?
Fotografien von Palästina, aufgenommen 1917/1918 durch die bayerische Fliegerabteilung 304
or later a group photograph of the airmen states:
Unterhaltung bei Abteilung 304: Gruppenfoto Weihnachten 1917: von Künsberg, Berthold, Walz, Fergg, Rehm, Fischer, Haugg, Engel, Hauck, Winterbauer, Saradeth, Schreiber, Ulrich, Forster
In both quotes they list the man as being with the 304.
Thinking further on the photo title, written as "Von Künsberg und Kraftfarher" have I presumed too much by translating kraftfarher to mean "driver"? - in the light of the fact your research says he was killed in air combat - could Kraftfarher translate to mean "Observer"?
However the Memorial at Lenin shows only one man dead on the 8th June - would not the "Observer" in the same aircraft also be recognised on the same memorial - or was Von Künsberg flying a single-seater?