My radio was holding me back on the crow mixes, and it still may be. I just got a 2.4 7C and I am still in the learning stages on it . I had to visit the Futaba Forums here on RCU and the FAQ pages on the manufactors site just to get the dual elevator mix set up on it. Seems like there was some miss information on which channel to use for the other servo. Futaba was saying channel 7 but it turned out you have to use channel 5. I had been using their 6EAX radio, While a very good radio you were very limited on the mixing. I'm still not sure the 7C will do what I want but for the price it was a very good deal. Now I'm using the 7C on an Extra but have intentions on using it on all my planes. It will cost me $500 to outfit the rest with recievers so it will be a one here and one later conversion kinda thing