I have a HB also. I don't have dual rates or anything fancy on my radio, but I wish I did. The one suggestion I have for the servos is to make a new hole for the control rod as close to the servo shaft as possible. These things are way twichy and if you put the control rods at the end of the servo arm, I'm afraid it will be way too much control. Your dual rates can counter this as well, I think.