The sled plug is make by Hirose, and isn't really sold to hobbyists. I've been meaning to try and track them down and see if they could be ordered in quantitys of 20 or something, as I suspect many people would want one or two for home docking sleds or other projects. If your docking sled is just out of the box, contact support and they will sovle all your problems.

You can search for the exact model number, one of the empeg guys posted it when I asked. QR/P6 comes to mind, but I'm not sure.

Matthew