ive measured everything, and the plane seems to be as square as im going to get it. my big question right now is do i hook the aileron servos up to work independently, or off one output, and opposite of each other, like my retracts. they run to a y connector, and i have a connector that the lhs told me to put on that reverses polarity to one servo.  i have two servos to work with, one in each wing.