I just got my CyberSyncs and they dont seem to be working. On my D90 I have the CST transmitter in my hot shoe and it's turned to channel 5. On my SB-800 I have the CSRB plugged into the PC port and turned to channel 5. I hit the test button on the receiver and the flash goes off. I hit the test on the transmitter and I get nothing. Is there a setting on my camera or flash I need to have on? Or do I just have a faulty transmitter?