Is one of my options going to court?
Yes, you also have the option to bring an action in a United States district court . You have 6 years to bring such an action after accrual of the right for which the claim is made . You may want to speak with an attorney about this option .
can I ask about filing a supplemental claim?
When you choose to file a Supplemental Claim you are adding new evidence that supports your case or identifying evidence for review .A reviewer will determine whether the new evidence changes the decision .