Flaps and mixing channels?

What controller are you using? RF 9.5 I believe uses a DXS, which does not have D/R, expo, or mixing facilities. My DXS does not have a serial number, which you need to register and download upgrades. You'll need something like a DX6 or DX6e radio to find the D/R and mixing controls etc. For some aircraft, you have to choose between controlling flaps or gear.