I have an Sbach that has rates that go from 45deg. On high rates to 20 deg. for low rates. I started with 140% for he high on the radio but I hav to go down to 30% to get the 20 deg. The servo arm and the horn are the same distance from center (hing or servo spline) to connection point, approx. 1.5". The arms are 90deg to the pushrods, not necessarily to the servo body. Conection on horn is in line with the hinge pivot. Is this correct to have such a low number not close to 100%? Had to start at 140% or it would be almost 0% for low rate. I have not had a plane with 3D rates before. Can take some pics if that would help.