Hi Larry, not sure about Kaiser's ultimate fate but i have his final victory dated 22.2.44 with 3/JG27.
From the WC later served with the StabI/JG27 5.42,
3/JG27 from 10.43.
Source if i may, Tom Kracker's excellent website courtesy of Aircrew Remembrance Society.
http://aircrewremembrancesociety.com...erArchive.html
Best regs,
Steve.