I don't own a JR radio, I fly futaba. I bought the plane used, came with a OS 46 AX, servos, battery. RTF except radio. I think if the P-51 is no longer fun to fly that i'm going to build this kit (and when money allows). The servo tray had all 4 screws holes striped so I found new larger diameter screws with a coarser thread and remounted the servo tray. I then used Krazy glue (only "CA" I can find tonight) to harden the holes.