Have you tried calling USEF at +977 1-4414598. They will be the best people to answer that. Another option would be to ask your counselor in India (via email) to attest your copy. You could scan the marksheet, email it to the counselor and ask them to attest it and send it back to you on your email. You can save the trip that way and this totally works as long as the counselor is okay with that. Keep us updated how the process goes!
10 Questions 3 Child