If you are using a Y-harness for the ailerons, it is not possible to use them for crow. With a Y-harness you can only use the ailerons as such, meaning they travel in opposing directions. For crow, both ailerons need to travel up, and you need to plug the aileron cables into separate receiver channels and mix them. I am not familiar with your radio, but with my Multiplex radio I use channel 1 and 5 for ailerons and channels 6 and 7 for flaps, and then mix them together. You can Y-harness the flaps since both flaps always travel in the same direction together. But I am not sure how to mix the ailerons with flaps with your radio