This is an interesting post, Ketch.
I can add a little to this thread. After I had complained about certain things in a SRF progress report, Br. Satyananda called me and I also confronted him with the alleged forgery of the signature. And he said that PY did sign both ways.
Up to now I was sure that PY didn't care at all about the extra "a" and that it was an change made by SRF after his passing at a time when pressure from India was on SRF, but now I wonder.