I'm about to start covering my Aeromaster. Not planning on flaperons. A 1 deg (neg) incidence is needed for the top wing. I had to shim the hard wood slot to get this. Having trouble getting a suitable throttle linkage because of the elevation difference between the engine and servo. I'm using a ST 61 ring. I went with outer struts and version 3 (52"/52"). Let me know your final weight w/engine!