You might try IH8MUD.com too; you'll find a much broader group with ideas and suggestions.
Off the top of my head - did you notice the "misfire" before taking it to emissions? Do you remember when it started, or more important, what may have changed that would have caused it to happen? My buddy replaced his spark plugs and then started running rough and throwing codes. Turned out he smashed the electrode on the spark plug as he was inserting it so it wasn't sparking on 1 cylinder. Did you replace the points correctly, verify the gap is correct? Is it getting sufficient strength spark? Correct plugs for the engine? Just some things to think about...