I let the servos center themselves when I fired up the transmitter, before installing them and the linkages onto the airframe. looked to still be a slight imperfection. The plane is totalled and scrapped now, but I will have pics of the next build, especially if it has problems on function check. Is there a function on the transmitter settings that would let me center the servos even further?
What radio are you using many times sub trim is needed to get the correct 90 degrees,