(...forlornly looks toward Peoria....)
...sigh...
Your AME, if he was like one of our favorite AME's, should be willing to take the extra effort to champion this and cut through some of the red tape. Especially if there is high confidence that all the OKC docs want to see is there and you're just seeking for them to agree with your AME.
So you might see if you could trade a weeks worth of breakfast taco's and quality lunches for him and his staff to make the call to OKC and make an effort on your behalf.