So, I recently lost the TBP12 Relay transmitter which was included with my G90 Relay system.  I purchased a new TBP12 transmitter when it arrived I noticed instead of reading "Relay" it read "XD-V75".  I thought nothing of it because beneath that it still read TBP12 so I switched it to channel 2 along with my G90 receiver yet my receiver didn't pickup the new transmitter.  Is there some kind of update or syncing process I need to do?