When I select PPM in the OSD first time setup and set my R-XSR to PPM, it is recognized as soon as I center the sticks. If I switch the R-XSR to SBUS mode and select SBUS on the OSD, it does not recognize it (tried the un-inverted tab on the R-XSR as well, same thing). I also tried an actual Futaba RX with SBUS and it is not recognized either. I made sure the R-XSR has the latest FW and made sure the TBS agent updated to the latest FW. Any ideas? This is driving me nuts.