The PTS P-51 is fairly DOCILE.

It's throw rates are also VERY conservative because it is targetted for newbies.

Do not lower the throws as you'll end up without enough elevator for landings or roll when you need to right the plane because of a crosswind.

Instead set the Expo HIGHER to approximately 30 ( for low ) and 50 ( for high rates ).

I don't remember if the included radio has EXPO settings. I never flew mine with the radio that is provided.