I'm new to editing airplanes in FSX. I created an own J-3 Cub texture (for Shell) and and took the flight dynamics of the default J-3 and added the engine and propeller parameters and parts of the panel of the Taccoli Savannah38.(It's a 100hp Rotax)
The problem is that it doese not more than 4000rpm where it should do 5800 and still sticks to the ground
what did I do wrong?