Hello Mr. Quaid,
On the copy of machinist drawings I have number D6535504 titled "Rotor Assembly" there is a note that states in all capitol letters quote, "SPRING CASE TO BE PACKED WITH GULF SUPREME CUP GREASE #3 OR EQUAL BEFORE ASSEMBLING TO ROTOR."
This was done after the rotor spring was riveted to the rotor spring case and the hub pin was staked.
I hope that this will clarify your concerns as to if this was done originally.
Sterling Thompson