I absolutely understand the difference between certified and licensed. I also understand that the Quote from Futaba's site may have mistated that the shop must be licensed. But, what I am trying to avoid is new people thinking that a radio does not have to go back to a shop if the crystal is changed.
Well I send my radio's to Radio South, about time to do so again, they have changed my transmitter crystal once. I suggest that all do the same. It only costs something like $25 plus crystal as I recall and they check out the radio as well, even replaced a switch as I recall.