Hi, I am trying to connect 2 SB800's to work in TTL and they don't seem to want to do it. I know I can use the built in wireless but there are situations where a fixed cord for me works better. So, I have on the D2X 1 SB800, the sc19 is connected into that and then into the 2nd SB800. The 2nd Sb800 seems to just do it's own thing and is not communicating. I tried it with an AS-10 and an SC-17 but nothing seems to work. Is there some setting on the D2X that may be interefering? I tried it with 2 different SC19 cables too although there is always the remote possibility they are both broken. Any thoughts.