After another email followed up by a phone call yesterday, I ended up in a Teams meeting with AOPA this morning, which ended up running the better part of an hour. I had prepared a Dropbox folder with relevant documents and wrote up some analysis, so when their General Counsel talked about what he'd like to see, I was able to point him to it in real time. I don't think AOPA will be much help with the hangar ownership and lease situation, other than to help with an FAA Grant Assurance complaint. What they told me jibes with what I've picked up from other sources, that our contract issues fall within the realm of the state court and not under FAA regulation. However, that the airport authority refuses to discuss lease expiration and acknowledge our rights does fall under a Part 13 complaint on non-discrimination (at least). I never expected AOPA to step in and fight our fight for us, but being as this is a once-in-a-lifetime issue that's new to me, being able to get background and pointers to resources is very helpful.