Good day, great insight,let me try to add the channels in real flight,pair it with my radiomaster and come back.Now that you've added channels 7 and 8 on your RadioMaster, you need to make sure that those channels are mapped to channels in RealFlight's virtual radio system. You do that in the Controller Profile. You probably had to go there to set up the RadioMaster originally, so go back and edit your Controller Profile to link up those channels with RealFlight Channel 7 and 8.