Well.. is it possible that they were using some different rockets, not the R4M? Because they looked like this:
Top - armour piercing warhead; Bottom - high explosive warhead
Did he said how many were carried at once?
Is there any way how to see from outside from this view if it is using TS or D-2 engine?
And in which units did F-9s serve? SG 2 and 10 were already mentioned as well as SG 9. I have read somewhere that in III./JG 54 some F-9 were serving, equipped with panzeblitz rockets.