Hello Chris,
We certainly could open a chat connection!
Now I understand why you were so convinced that Kettling was not in the Nachtjagd! There are two possible explanations for this: Herr Kettling was only with the 3/NJG 1 for a very short time (this short time may have faded from his memory as it would have been with me after some years). Another theory: somehow he shows up in an inventory of 3/NJG 1 pilots but before this posting became official, he and other comrades from I.ZG 76 continued to fight in their Zerstoerer unit. I have my doubts about that: some of the listed names have been in the 3/NJG 1 before this Staffel was renamed in 4/NJG 1.
What ever may come out about your conversation with Kettling, tomorrow I will send you a scan of the relevant page from this I.NJG 1 history with all those names.
A revealing and interesting thread! It helps me to understand the origins about 'my' I.NJG 1 for a great deal.
Best wishes, Marcel