Originally Posted by
A. J. Clark
The radio does remember the trim setting. The reason to recenter the servos is that the gyro likes the servo to be centered. After a trim flight you set the trim back to zero then you put the trim back in by adjusting the length of the control rod. It doesn't have to be perfect.
I'm not sure about that. I've seen videos that suggest saving the trims to "subtrims" on the radio and model you're flying. Then when you fly that plane again, reset radio trims to center then you just reload the "subtrims" into the main trim settings, so that plane will be trimmed appropriately automatically for you by the radio. Thats what I plan to do.
I do the manual alignment of the pushrods before I fly the plane the first time so that with servos in neutral position, the control surfaces are visually aligned appropriately, But I would not go back and change that, unless for some reason trims cannot be easily set during flight to keep it level (rare). YMMV