I was able to get the transaction to go through. If I have additional problems I will let you know. The solution seems to be related to requiring a full 9 digit zip code. I had problems on the USPS site trying to get a mailing label for this address until I used a full 9 digit zip code. Possible related to the reported Powerstore problem when calling the USPS API. Don't know but will keep my eye on it.