Thanks, that’s pretty much what I had done — except I gave my sidebar a different name. It’s registered; it shows up on my widget page; I put the bbpress items in my new sidebar; I edited the php file to give it the proper i.d.; I called it from the community.php template. Still defaulting to the regular page sidebar.
What seems to be happening is that it doesn’t recognize the template I’m choosing for my Community page. It will only read the default template. Is that a thing with bbPress?