I have tried a couple of times to offer a suggestion to maybe help get the benefits you feel you are entitled to. So I'll make it short this time, maybe then it'll go through.
Contact a local Disabled American Veteran chapter. They will act in your behalf as an agent for you. I did this and have gotten results.
Try it and see. Good luck to you.

Thank you for your response. He does have an agent and he does get some benefits, but no benefits related to this particular affliction. I was more curious to know if any other veterans from this era have experienced any of these symptoms. Again, your response is really appreciated.