RE: High/Low Rates or Expo?
Ken has a great point.
On my Tiger 60, I was finding that it was lacking in maneuvers as I was getting better at them. Same with the Four Star 40. The loops and rolls were really sluggish. At first, I attributed it to prop size. Then, I changed the D/R a bit and put more into the ailerons and elevator and both planes sort of 'woke up'.
The reason I had them on low rate, well, actually, I had both high and low at 100% so they were both the same, was because I was not ready for dual rates, or high rates, or wondering what position the switches were in. Now, after a bit more experience, I always check the D/R in low then switch them in and out as needed.
DS.