I've experienced things similar to Linda.
While part of a Tri-Ess group (support for hetero CD's and spouses) I was exposed to other groups, some comprised mainly of transexuals. There was a distinct bias against those of us were not Trans. It was as if we were lower class and not as good as them. I'm not saying all feel this way, I'm saying those I encountered did.
I can understand their struggle is different from ours and in some ways they feel even that we don't understand. My feeling is that alienation of a segment is never good. We all need every ounce of support we can muster if we are to make the gains in society that have been made by our Gay and Lesbian brothers and sisters.