Well I am new to rc airplanes, been driving cars and trucks for a long time and wanted to learn to fly so I bought a Super Cub and a spectrum Dx6i radio to go with it. The problem I am having is when I have the plane on the ground and check the rudders and flap control it seems to go back to the nuetral position when I hold them in one direction for about 2 or 3 seconds. Does anyone know why it is doing this? I didn't know if there is a control on the radio or if the ACT causes this. I believe it even does it while the plane is in the air because it seems that when I would try and gain altitude it would for a second and then would quit. Same with the turning. Any help or advice would be greatly appreciated.