RE: Question on Wing Incidence
Yes. You have to block up your aircraft so that whatever you choose as your reference line is level and then measure the leading and trailing edges of the wing and stabilizer.
You can get a piece of straight wood and drill it so you can mount it to the engine. Then you turn it so it is vertical and from the side, measure the angle of it to the board.
Turn it 90 degrees and you can check side thrust.