Sure do, AMSA are a pleasure to deal with as an offshore racing sailor with International experience I find them always helpful, they hold quite frequent user seminars then after they poll the attendees to see what value they got from the AMSA input. The RCC in Canberra are really great people, rarely fussed and very efficient.
Contrast this with CASA, unhelpful to the point of being interfering and aggressive, no use of effective feedback, what more can I say ?????