I took my first steps into dual specialization, and immediately created a problem. When I selected my new specialization, I accidentally selected the same specialization I already had. After several exchanges with a GM trying to undue my mistake, I got a message that they couldn't assist with game content and told me to go to one of the forums for assistance. I took that to mean that there was some quest or other game mechanic that would allow me to delete/change my second specialization. I haven't been able to find one.
Can someone point me in the right direction?