Most radios will not do crow in ACRO mode, Its a glider function. How many channels does the 347 have? I used the JR662 and had to set flaps up on the landing gear switch, and the aileron spoilers on flaps switch. To activate crow, I had to flip two switches it works great. I called two different radio companies about crow and I basically got the same answer. The ultra stik is more advance than the radio hardware available. HiTec said, there are future plans to update the spectrum radio to crow, and JR has it available on the 10X. I spent days trying to make it work on my Hitec radio, I finally gave up and got the JR 662, which required 2 switches to do crow.
will