I'm the head of the only local trans* org. That's how I come to get asked to do things like this.

. One of the things we do is run a network that connects other trans* orgs in nearby jurisdictions. But I'm involved in something that people are not yet supposed to know about, so I am being deliberately vague about where it is happening, what is going on, etc. And I'm trying to avoid doing things that would lead to the secrets coming out.
I sometimes do work with NCTE, but I avoid PFLAG and Lambda. Lambda has never been a source of helpful info. With PFLAG I've dealt with chapters throughout the region plus their national HQ and found that they are usually an obstacle when it comes to organizing around trans* issues. I'm glad you're experience has been more positive.