The only thing the bureaucrats respect more than regulations is paperwork. Being able to hand them a manila folder filled with notarized confirmations of your condition would be hard for them to ignore.
Have you read / excluded this:
https://www.amazon.com/Vaccine-Government-Experiment-Killing-Soldiers/dp/0465021824
?
Also, the DAV and other veterans associations may be able to point you in the right direction and offer experienced support.
There are people out there who really wanna help.
Some of them are even in the "evil VA" system. d;^)
Just like a lot of places, ya hafta get the right peeps on the case. And some "persistence at the speed of .gov" will also help. These things generally require "x" amount of user input.
Good luck to you, sir. d:^)