RE: Matching Elevator Travels
Triple rates on the BME Yak...? What are you thinking! This is not a competitive IMAC plane. Crank your high rates up to as much as you can get, add 35-60% expo and you are good to go. You will need to trim your elevators to get a little more rudder throw. I don't think you will ever use your low or medium rates. I found the suggested low rates much too sedate for any real aerobatic stuff.
Low rates: