Just post an inquiry here Researching Your Civil War Ancestors and you will get some quick and informative replies. Just be sure to make clear what your need. Some will post a comment here about their ancestor with no question so it is read with no replies.
Years ago, I would receive emails via my WW2 site and they would tell me about their family's Veteran. I would write a 1 page reply about his unit and where he was probably killed etc and send it. Then I get the reply of something like: Oh, I already knew that, I just wondered what was the name of the ship they sailed on. I quickly learned not to waste time searching answers for a question never asked.