Using two SDC2130's with a single remote receiver

My goal is to use a single Spektrum remote receiver to control two SDC2130's at the same time.

I am able to bind one of the SDC2130's to the receiver and have it work properly with my DX6i transmitter. The second SDC2130 will not bind to the receiver at all. I have cycled the power of the SDC2130 several time and even left the power off for several minutes. When I plug the receiver into the second SDC2130 the light in the receiver will be lit solid, but I have no response from the joy stick on the controller. Both SDC2130's have the same configuration file loaded.

Once a receiver is bound to a controller, is it not possible to bind that receiver to a second/different controller?

Thanks,
Dave