I'm in need of a new ballast, and was looking at the 400 watt lumatek. I'm confused as to what socket, if any, I need to purchase with it. I currently have a "remanufactured" coil style ballast, which gets really hot. I'm looking to use a cooltube reflector with the lumatek, so which socket set do I need? I have the socket that came with the cooltube as well, if that can worK? I've tried looking around on both the forums and the 'net in general, but haven't found a clear answer yet.