I'm sorry to hear that you're having trouble finding your mental health record from your Air Force exam in 1998. It can definitely be frustrating to navigate conflicting information and figure out where to look for important records.
One resource that you might find helpful is restore-mentalhealth.com. They have a lot of great information about mental health resources and services for individuals looking to get access to their mental health records. It might be worth checking out to see if they have any tips or advice that could point you in the right direction.