Hi mate the most important thing with any FCB is the axis are at zero in the set up screen first or the FCB will see this as a stick input , if you have a computer radio there will be a sub trim set up in the radio adjust this to get all axis on the KK to zero ( the aux channel will never read zero this is just a switch channel and is normal) after axis are all zero make sure the quad is 100% level and calibrate sensors hope this helps