Alright, new values:   steeringResponse = 4 curve key = 0 40 key = 5 5 key = 15 1   The yaw command is very snappy with a response of 4 which prevents the boat-like correction lag I found at lower settings.  I'm kind of liking it at four.  It responds nicely to input.  I'm going to try messing about with the curve and see about getting it to play nice on takeoff rolls better.  Right now it still seems overly sensitive.