Dual Rate Setting ? (Also an Engine Question)
Start out with about 1/2 to 3/4 of the full rates.
Or wind them out completely to 100%.
Dual rates are really not needed on a trainer, and you could find yourself in trouble if you are trying to pull out of a bad spot and only have half of your normal control.
I always tell my students to wind them out to 100% just in case a switch accidently gets thrown.